When to Plant Squash in Atlanta, GA
Published: April 21, 2026
Squash Planting Dates for Atlanta, GA
| Start seeds indoors | February 8–15 |
| Last frost (average) | March 1 |
| Transplant outdoors | March 8–18 |
| Direct sow outdoors | March 8–18 |
| Minimum soil temperature | 65°F |
| Expect first harvest | April 22 – May 12 |
| Fall crop planting | September 13–23 |
| Fall crop harvest | October 28 |
| First fall frost (average) | November 22 |
Best Squash Varieties for Atlanta, GA
For Zone 7b Atlanta, the best-performing squash varieties are Black Beauty, Patio Star, and Zephyr — all widely adapted, disease-resistant varieties proven across the transition zone. Yellow Crookneck is a good alternative where disease resistance matters most, especially in humid summers. These varieties are typically stocked by local nurseries and are the safest bets for gardeners new to squash in Atlanta.
Growing Squash in Atlanta
Atlanta sits in Zone 7b, with an average last frost of March 1 and first fall frost around November 22 — giving a 266-day frost-free growing season. Warm-season crops like squash need soil at 65°F or above before transplanting; Atlanta's frost calendar puts that window clearly in the late-spring to early-fall range.
Atlanta's moderate climate supports squash on the standard transplant calendar with minimal special accommodation. Succession planting — sowing fresh seeds or setting new transplants every 2–3 weeks through spring — stretches the harvest window and gives you a backup crop if pests hit the first planting.
Atlanta's Zone 7b is classic transition territory for squash. The season is long enough for a full warm-season crop without needing aggressive indoor starting — 6 weeks before last frost is enough for most varieties. Late frosts are the main risk; keep row cover available until 2 weeks after your average last frost.
Atlanta's sandy soils drain fast — Atlanta gardeners should water squash more frequently (every 2 to 3 days during peak summer) and add generous compost to improve moisture retention. Raised beds with amended soil perform significantly better than in-ground planting in sandy conditions. Target 1.5 inches of total water per week, split across several irrigation sessions rather than one deep soaking.
Squash Calendar for Atlanta
| Month | Task |
|---|---|
| February | Start seeds indoors under grow lights |
| March | Transplant outdoors into warm soil |
| April | Expect first harvest window to open |
| September | Start fall crop — transplants or direct sow |
| November | First fall frost — harvest remaining, end of outdoor season |
Squash Tips for Atlanta Gardeners
- •Plant only after soil is fully warm (65°F+) — cold soil rots seeds and creates disease-prone seedlings.
- •Squash vine borer kills plants from the inside in July–August in the eastern US; plant a backup crop in early July.
- •Succession plant squash in Atlanta every 2–3 weeks through spring to extend the harvest window into summer.
Common Squash Pests in Atlanta
- •Squash Vine Borer — peaks July in Zone 7b (active May–September); sudden wilting with frass at stem base; inject Bt into the stem or use row covers through flowering.
- •Squash Bug — peaks July in Zone 7b (active May–September); gray-brown shield bugs that suck plant sap; handpick and destroy egg clusters on leaf undersides.
- •Powdery Mildew — peaks July in Zone 7b (active May–September); white powdery coating on leaves; improve airflow and apply milk spray (1:9 milk-to-water).
Check plants every 2–3 days during peak season — early intervention prevents most infestations from becoming serious.
What to Plant with Squash in Atlanta
In Atlanta's moderate climate, Corn and Bush Beans are the most beneficial plants to grow alongside squash. Corn provides vertical support for climbing companions in the Three Sisters planting. Keep squash away from Potato — it competes for nutrients and shares blight diseases.
Frequently Asked Questions
When should I plant squash in Atlanta, GA?
In Atlanta (Zone 7b), start squash seeds indoors around February 8–15 and transplant outdoors around March 8–18. The city's average last frost of March 1 is the anchor date — count 3 weeks back for seed starting and 1 weeks forward for transplanting.
What zone is Atlanta, GA for squash growing?
Atlanta is USDA Zone 7b. For squash, this means a frost-free growing season of roughly 38 weeks running from March 1 to November 22. This is a comfortable window for warm-season crops like squash — standard varieties work well.
When is squash harvest season in Atlanta?
Expect the first squash harvest in Atlanta around April 22, with harvest continuing through May 12. This is based on 45–65 days from transplant or direct sow. A fall crop planted September 13–23 adds a second harvest around October 28.
How long does it take to grow squash in Atlanta, GA?
From transplant or direct sow to first harvest, squash takes 45–65 days in Atlanta's climate. Based on a typical planting date of March 8–18, expect your first harvest around April 22. Atlanta's Zone 7b transition-zone climate produces maturity times right in the middle of the stated range.
What soil does squash need in Atlanta?
Atlanta's sandy soils drain fast and lose nutrients quickly — a challenge for squash which prefers steady moisture. Add 4–6 inches of compost annually to improve moisture retention. Water more frequently but with less volume per session, and mulch heavily to reduce evaporation.