🌻 Can I Plant Sunflower in Memphis, TN?
Temperature conditions are suitable for Sunflower.
Growing Sunflower in Memphis
Memphis sits in Zone 7b along the Mississippi River, with about 230 frost-free days. The humid subtropical climate means hot, muggy summers that favor heat-tolerant crops like okra, sweet potatoes, and Southern peas. Spring arrives early enough for a productive warm-season garden, and fall is excellent for cool-season greens started in September.
In Memphis (last frost around March 20), aim to direct sow or transplant sunflower outside around April — approximately 2 weeks after your last expected frost. Starting seeds indoors 2 weeks before the last frost date gives you a significant head start.
Sunflower thrives between 60°F and 95°F. It is frost-sensitive, meaning a single freeze at 32°F will damage or kill it — always wait until frost danger has fully passed. Expect 70–100 days from transplant to first harvest. Direct sow preferred. Full sun and well-drained soil.
Frequently Asked Questions
When can I plant sunflower in Memphis, TN?
In Memphis (last frost around March 20), aim to direct sow or transplant sunflower outside around April — approximately 2 weeks after your last expected frost. For best results, start seeds indoors 2 weeks before that — giving you strong transplants ready to go out at the right time.
What is the USDA hardiness zone for Memphis?
Memphis, TN is in USDA Plant Hardiness Zone 7b. The last expected spring frost is around March 20, and the first fall frost arrives around November 7. This zone classification helps you understand which perennials survive winter and when annual vegetables can safely go outdoors.
Is it safe to plant sunflower outside in Memphis right now?
That depends on the current weather forecast. Sunflower needs temperatures above 50°F (ideally 60–95°F) to thrive. CanIPlant checks your real 7-day forecast and any active frost alerts to give you a live YES, NO, or WAIT answer — just enter your ZIP code.
Can I grow sunflower in Memphis 2026?
Yes — Sunflower grows well in Memphis, TN. With a Zone 7b climate and a growing season of ~232 days, Memphis is well-suited for warm-season crops like sunflower. Just wait until after the last frost (around March 20) before moving plants outside.
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