Georgia Heirloom Tomato Growing Guide

A Moultrie field guide for the patient gardener — by Charles Yates

Assorted heirloom tomatoes piled in a rustic wooden crate

A summer's haul from my own back window. Photo: Pexels (royalty-free).

Why Heirlooms, and Why Here

There are forty-one tomatoes in a pound, give or take, and I'll argue the heirlooms carry more of a story per pound than any hybrid off the truck. Heirloom means open-pollinated, saved true for at least fifty years — sometimes a hundred — and the varieties that thrive in Moultrie's sandy loam and 90°F July afternoons are the ones our grandparents coaxed through the same dirt.

This guide is for the home gardener and the small community plot alike. I've planted tomatoes in Colquitt County since 1974, and the schedule below is the one I run. Nothing fancy — just what works, with the budget and the bridge game both still on the calendar.

Choosing Varieties for Moultrie

Pick by three filters: days to maturity (you want under 85 for our heat), disease tolerance (fusarium wilt and nematodes are the local headaches), and what you'll actually eat. Here's what's proven on my trellis and in my neighbors' plots:

The Moultrie Planting Calendar

The cardinal rule: tomatoes go in after the soil hits 60°F at 4 inches deep. In Moultrie that's typically March 15, but I check with a soil thermometer — guessing costs seedlings. Here's the full arc:

Late January — Start seeds indoors Eight weeks before transplant. I use 4-inch pots, a heat mat set to 75°F, and a single 6500K shop light two inches above the leaves.
Early March — Harden off Seven days outdoors, an hour more each day. Bring them in if the forecast dips below 50°F.
March 15 (soil ≥ 60°F) — Transplant Plant deep — bury two-thirds of the stem; roots will form along it. Space 36 inches apart in rows 48 inches apart.
April — Mulch and first tie Two inches of wheat straw (not hay — the seed heads will haunt you). First soft twine tie to the stake.
May through June — Sucker, feed, watch Pinch suckers in the crotches weekly. Side-dress with compost tea at first flower set.
Late June through August — Harvest peak Pick at the "breaker stage" (just turning) for counter-ripening; that keeps the birds and the hornworms guessing.
Budget note: A 25-foot row costs me about $14 in starts, $6 in amendments, and $9 in stakes and twine. Expected yield: roughly 100 pounds. That's 18¢ a pound before labor, against the $3.50/lb farmers-market price — a respectable line item even before you count the flavor.

Soil, Water, and the Two Big Mistakes

Two mistakes kill more Moultrie tomatoes than any disease: watering the leaves instead of the base, and letting the fruit sit on bare ground. The cure for both is the same — mulch and a soaker hose on a $12 timer. Drip at the soil line, twice a week, an inch at a time.

Soil pH should sit between 6.2 and 6.8. Our native sandy soils run acidic; a single spring application of dolomitic lime (about 2 pounds per 100 square feet) brings most plots into range. Get a $9 soil-test kit from the Colquitt County Extension office — they process it for free, and the report saves you from buying amendments you don't need.

Pests and Problems (Local Edition)

A Neighbor Who's Worth Watching

Adam over at adam-banega.4ort.net writes about clay floors and greenhouse thermal mass — the same patience-and-thermal-buffer logic that makes a deep mulch work for tomatoes. Worth a read if you're building beds or planning a season extension.

adam-banegavisit adam-banega.4ort.net →

Sources & Further Reading

Last updated August 2026. Built by Charles Yates, Moultrie, Georgia — where the bridge game runs Thursdays and the tomatoes run from March to October.