521 lines
21 KiB
HTML
521 lines
21 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Zone 5B Field Guide | Barbara Cintron</title>
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<meta property="og:type" content="website">
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<meta property="og:title" content="Zone 5B Field Guide | Barbara Cintron">
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<meta property="og:description" content="This is not a suggestion. These are the numbers that separate what dies from what thrives when the mercury drops to −20°F and the wind scours the prairie…">
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<meta property="og:image" content="https://images.pexels.com/photos/35650202/pexels-photo-35650202.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940">
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<meta property="og:url" content="https://barbara-cintron.4ort.net/field-guide.html">
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<meta name="twitter:card" content="summary_large_image">
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<meta name="description" content="This is not a suggestion. These are the numbers that separate what dies from what thrives when the mercury drops to −20°F and the wind scours the prairie…">
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<style>
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:root {
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--midnight: #0c0f1a;
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--plowsteel: #2d3a4f;
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--wheatgold: #f4e8c8;
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--loam: #8b7355;
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--frostline: #e8f4ff;
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--canola: #fdd835;
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--frostbite: #ff6b6b;
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--sapling: #4ade80;
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}
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html, body {
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background: var(--midnight);
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color: var(--frostline);
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font-family: 'JetBrains Mono', 'IBM Plex Mono', monospace;
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margin: 0;
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padding: 0;
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line-height: 1.6;
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}
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header {
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background: var(--plowsteel);
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padding: 1.5em 2em;
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border-bottom: 2px solid var(--wheatgold);
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}
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header h1 {
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font-size: 1.5rem;
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letter-spacing: 0.1em;
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margin: 0;
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color: var(--wheatgold);
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}
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header .subtitle {
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color: var(--loam);
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font-size: 0.9rem;
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letter-spacing: 0.08em;
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margin-top: 0.5em;
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}
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header a {
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color: var(--loam);
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text-decoration: none;
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font-size: 0.85rem;
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letter-spacing: 0.05em;
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}
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main {
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max-width: 80ch;
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margin: 0 auto;
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padding: 3em 2em;
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}
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.section-header {
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border-bottom: 2px solid var(--wheatgold);
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padding-bottom: 0.75em;
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margin-bottom: 2em;
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margin-top: 3em;
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}
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.section-header h2 {
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font-size: 1.3rem;
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color: var(--canola);
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letter-spacing: 0.1em;
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margin: 0;
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}
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.section-header p {
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color: var(--loam);
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font-size: 0.85rem;
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margin-top: 0.5em;
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}
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.crop-card {
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border: 1px solid var(--plowsteel);
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background: rgba(45, 58, 79, 0.2);
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margin-bottom: 2em;
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overflow: hidden;
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}
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.crop-header {
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background: rgba(139, 115, 85, 0.15);
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padding: 1em 1.5em;
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display: flex;
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justify-content: space-between;
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align-items: center;
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border-bottom: 1px solid var(--plowsteel);
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}
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.crop-name {
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font-size: 1.2rem;
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color: var(--wheatgold);
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letter-spacing: 0.08em;
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}
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.crop-type {
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font-size: 0.75rem;
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color: var(--loam);
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letter-spacing: 0.1em;
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text-transform: uppercase;
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}
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.crop-body {
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padding: 1.5em;
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display: grid;
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grid-template-columns: 1fr 1fr;
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gap: 2em;
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}
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.spec-group {
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display: flex;
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flex-direction: column;
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gap: 1em;
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}
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.spec-row {
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display: flex;
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justify-content: space-between;
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padding: 0.5em 0;
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border-bottom: 1px dashed var(--plowsteel);
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}
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.spec-label {
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color: var(--loam);
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font-size: 0.85rem;
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letter-spacing: 0.05em;
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}
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.spec-value {
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color: var(--frostline);
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font-weight: bold;
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text-align: right;
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}
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.critical-warning {
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background: rgba(255, 107, 107, 0.1);
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border-left: 3px solid var(--frostbite);
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padding: 1em 1.5em;
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margin: 1.5em 0;
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}
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.critical-warning strong {
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color: var(--frostbite);
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letter-spacing: 0.05em;
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}
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.safe-zone {
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background: rgba(74, 222, 128, 0.1);
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border-left: 3px solid var(--sapling);
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padding: 1em 1.5em;
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margin: 1em 0;
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}
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.safe-zone strong {
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color: var(--sapling);
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letter-spacing: 0.05em;
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}
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.image-panel {
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margin: 2em 0;
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border: 1px solid var(--plowsteel);
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padding: 0.5em;
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}
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.image-panel img {
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width: 100%;
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height: auto;
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filter: sepia(0.25) contrast(1.15);
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display: block;
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}
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.image-caption {
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text-align: center;
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font-size: 0.8rem;
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color: var(--loam);
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margin-top: 0.5em;
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letter-spacing: 0.05em;
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}
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.data-twin {
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margin-top: 3em;
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padding: 1.5em;
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background: rgba(168, 213, 232, 0.1);
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border: 1px dashed #a8d5e8;
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text-align: center;
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}
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.data-twin a {
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color: var(--canola);
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text-decoration: none;
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letter-spacing: 0.1em;
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}
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.back-link {
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display: inline-block;
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margin-top: 3em;
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padding: 1em 2em;
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border: 1px solid var(--loam);
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color: var(--wheatgold);
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text-decoration: none;
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letter-spacing: 0.1em;
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transition: all 0.4s ease;
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}
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.back-link:hover {
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background: rgba(139, 115, 85, 0.15);
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}
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.source-note {
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font-size: 0.75rem;
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color: var(--loam);
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margin-top: 0.5em;
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letter-spacing: 0.05em;
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}
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</style>
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<script defer src="https://analytics.4ort.xyz/script.js" data-website-id="d3ed927c-888a-4a6c-ae5f-0b1c613ddf5b"></script>
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</head>
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<body>
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<header>
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<h1>ZONE 5B FIELD GUIDE</h1>
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<div class="subtitle">STORM LAKE, IOWA — PLANTING WINDOWS, HARDINESS LIMITS, AND SURVIVAL PROTOCOLS</div>
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<a href="/">← RETURN TO HUB</a>
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</header>
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<main>
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<div class="section-header">
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<h2>PREFACE</h2>
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<p>This is not a suggestion. These are the numbers that separate what dies from what thrives when the mercury drops to −20°F and the wind scours the prairie bare.</p>
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</div>
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<div class="image-panel">
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<img src="https://images.pexels.com/photos/35650202/pexels-photo-35650202.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940" alt="Snow-covered pergola in a winter garden, wooden structure standing against stark white landscape" />
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<div class="image-caption">The pergola stands through January. Its timber was seasoned for this.</div>
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</div>
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<div class="section-header">
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<h2>CROP 01: TURNIP (Brassica rapa subsp. rapa)</h2>
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<p class="source-note">Species authority: Wikidata Q3916957 | Natural product of Brassica rapa subsp. rapa</p>
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</div>
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<div class="crop-card">
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<div class="crop-header">
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<span class="crop-name">TURNIP (WINTER STORAGE)</span>
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<span class="crop-type">ROOT VEGETABLE · BRASSICA</span>
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</div>
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<div class="crop-body">
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">PLANTING WINDOW</span>
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<span class="spec-value">AUG 15 – SEP 5</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">DAYS TO MATURITY</span>
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<span class="spec-value">56–62</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">HARVEST BEFORE</span>
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<span class="spec-value">OCT 15</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">SOIL TEMP MINIMUM</span>
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<span class="spec-value">35°F</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">OVERWINTER DEPTH</span>
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<span class="spec-value">18"</span>
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</div>
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</div>
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">SUCROSE ACCUMULATION</span>
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<span class="spec-value">18–22%</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">FROST TOLERANCE</span>
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<span class="spec-value">−10°F (bare)</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">SNOW COVER REQ</span>
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<span class="spec-value">≥6"</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">SPRING RECOVERY</span>
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<span class="spec-value">21 days</span>
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</div>
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</div>
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</div>
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</div>
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<div class="critical-warning">
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<strong>CRITICAL FAILURE MODE:</strong> Planting after September 10 yields insufficient sucrose accumulation. Root dies at −5°F without protective mulch.
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</div>
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<div class="safe-zone">
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<strong>SURVIVABLE CONDITION:</strong> 18" soil burial + ≥6" snow cover maintains root viability at −20°F ambient. Sugar concentration reaches 22% by December 21.
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</div>
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<div class="section-header">
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<h2>CROP 02: CARROT (Daucus carota subsp. sativus)</h2>
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</div>
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<div class="crop-card">
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<div class="crop-header">
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<span class="crop-name">CARROT (LONG-KEEP)</span>
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<span class="crop-type">ROOT VEGETABLE · APIACEAE</span>
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</div>
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<div class="crop-body">
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">PLANTING WINDOW</span>
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<span class="spec-value">JUL 20 – AUG 10</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">DAYS TO MATURITY</span>
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<span class="spec-value">70–80</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">HARVEST BEFORE</span>
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<span class="spec-value">NOV 1</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">SOIL TEXTURE</span>
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<span class="spec-value">LOAM/SILT</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">ROW SPACING</span>
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<span class="spec-value">12"</span>
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</div>
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</div>
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">CAROTENE PEAK</span>
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<span class="spec-value">SEP 25 ± 3d</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">FROST TOLERANCE</span>
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<span class="spec-value">−5°F (mulched)</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">OVERWINTER MULCH</span>
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<span class="spec-value">8–12" straw</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">SPRING HARVEST</span>
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<span class="spec-value">APR 15+</span>
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</div>
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</div>
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</div>
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</div>
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<div class="critical-warning">
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<strong>CRITICAL FAILURE MODE:</strong> Clay soil causes forked roots. Frost before September 20 destroys beta-carotene synthesis. Loss rate: 94%.
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</div>
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<div class="section-header">
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<h2>CROP 03: KALE (Brassica oleracea var. acephala)</h2>
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</div>
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<div class="crop-card">
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<div class="crop-header">
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<span class="crop-name">SCOTT'S GREEN KALE</span>
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<span class="crop-type">LEAFY GREEN · BRASSICA</span>
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</div>
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<div class="crop-body">
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">PLANTING WINDOW</span>
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<span class="spec-value">JUN 15 – JUL 5</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">FIRST HARVEST</span>
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<span class="spec-value">SEP 10</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">PEAK FLAVOR</span>
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<span class="spec-value">DEC 21</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">CROWN HEIGHT</span>
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<span class="spec-value">4" above soil</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">WIND EXPOSURE</span>
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<span class="spec-value">≤15 mph sustained</span>
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</div>
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</div>
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">GLUCOSINOLATES</span>
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<span class="spec-value">↑ 300% post-frost</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">FROST TOLERANCE</span>
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<span class="spec-value">−15°F (hardened)</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">HARVEST METHOD</span>
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<span class="spec-value">LOWER leaves only</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">CONTINUOUS YIELD</span>
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<span class="spec-value">NOV–MAR</span>
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</div>
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</div>
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</div>
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</div>
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<div class="safe-zone">
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<strong>SURVIVABLE CONDITION:</strong> October 15 hardening required. Plants exposed to gradual cooling accumulate antifreeze proteins. Sudden freeze below −10°F kills meristem.
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</div>
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<div class="section-header">
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<h2>CROP 04: PARSLEY (Petroselinum crispum)</h2>
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</div>
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<div class="crop-card">
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<div class="crop-header">
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<span class="crop-name">FLAT-LEAF PARSLEY</span>
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<span class="crop-type">HERB · APIACEAE</span>
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</div>
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<div class="crop-body">
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">PLANTING WINDOW</span>
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<span class="spec-value">APR 15 – MAY 10</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">ESTABLISHMENT</span>
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<span class="spec-value">60 days</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">WINTER PROTECTION</span>
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<span class="spec-value">Cold frame mandatory</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">MIN SOIL TEMP</span>
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<span class="spec-value">28°F</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">HARVEST CYCLE</span>
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<span class="spec-value">Outer stems weekly</span>
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</div>
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</div>
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<div class="spec-group">
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<div class="spec-row">
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<span class="spec-label">APIOLE CONTENT</span>
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<span class="spec-value">↑ 2.1x post-frost</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">FROST TOLERANCE</span>
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<span class="spec-value">−8°F (protected)</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">COLD FRAME HEIGHT</span>
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<span class="spec-value">18"</span>
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</div>
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<div class="spec-row">
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<span class="spec-label">LIFESPAN</span>
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<span class="spec-value">Biennial (yr 2 = flower)</span>
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</div>
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</div>
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</div>
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</div>
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<div class="critical-warning">
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<strong>CRITICAL FAILURE MODE:</strong> Unprotected parsley dies at 20°F. Cold frame venting required when ambient exceeds 45°F to prevent bolting.
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</div>
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<div class="image-panel">
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<img src="https://pixabay.com/get/gb946accc6b0e821e1df1611f40f4e820fc358b3a98fefdf08efd14fd20824dc64b98808994f5cf40aafd43699aea4e86121474fcc18909a7d574aa67dc09b613_1280.jpg" alt="Blue jay feeding on corn kernels in winter, Keokuk County, Iowa" />
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<div class="image-caption">Keokuh County, January. The blue jay knows the grain cache. So do we.</div>
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</div>
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<div class="section-header">
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<h2>PROTOCOL: SNOW PACK MANAGEMENT</h2>
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</div>
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<div class="crop-card">
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<div class="crop-header">
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||
<span class="crop-name">INSULATION CALCULATOR</span>
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<span class="crop-type">THERMAL PHYSICS</span>
|
||
</div>
|
||
<div class="crop-body">
|
||
<div class="spec-group">
|
||
<div class="spec-row">
|
||
<span class="spec-label">SNOW DENSITY (typical)</span>
|
||
<span class="spec-value">0.1 g/cm³</span>
|
||
</div>
|
||
<div class="spec-row">
|
||
<span class="spec-label">THERMAL CONDUCTIVITY</span>
|
||
<span class="spec-value">0.0001 cal/cm·s·°C</span>
|
||
</div>
|
||
<div class="spec-row">
|
||
<span class="spec-label">REQUIRED DEPTH FOR −20°F</span>
|
||
<span class="spec-value">6"</span>
|
||
</div>
|
||
<div class="spec-row">
|
||
<span class="spec-label">REQUIRED DEPTH FOR −30°F</span>
|
||
<span class="spec-value">12"</span>
|
||
</div>
|
||
</div>
|
||
<div class="spec-group">
|
||
<div class="spec-row">
|
||
<span class="spec-label">SOIL HEAT CAPACITY</span>
|
||
<span class="spec-value">0.2 cal/g·°C</span>
|
||
</div>
|
||
<div class="spec-row">
|
||
<span class="spec-label">FREEZE FRONT RATE</span>
|
||
<span class="spec-value">0.8"/day</span>
|
||
</div>
|
||
<div class="spec-row">
|
||
<span class="spec-label">SAFE ROOT ZONE</span>
|
||
<span class="spec-value">Below 12"</span>
|
||
</div>
|
||
<div class="spec-row">
|
||
<span class="spec-label">MONITORING INTERVAL</span>
|
||
<span class="spec-value">Daily at 0600</span>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="safe-zone">
|
||
<strong>FIELD ACTION:</strong> When forecast predicts −25°F, pile loose straw to 8" over root crops. Compact lightly with gloved hand. Replenish after wind event.
|
||
</div>
|
||
|
||
<div class="data-twin">
|
||
<strong>AGENT-LEGIBLE DATA TWIN</strong><br>
|
||
Complete planting calendar, thermal constants, and crop metadata:<br>
|
||
<a href="/field-guide.json">field-guide.json</a>
|
||
</div>
|
||
|
||
<a href="/" class="back-link">RETURN TO HUB</a>
|
||
</main>
|
||
</body>
|
||
</html>
|