Growing sunflowers in zone 10
Sunflowers direct-sow easily and dislike transplanting. Sow every 2–3 weeks for continuous blooms, and site tall varieties on the north side of the garden so they don’t shade everything else.
Zone 10 covers south Florida, coastal Southern California, low desert — frost is rare — the calendar flips, with the main garden running fall through spring. Zone dates are medians: frost timing varies within a zone with elevation and terrain, so treat these windows as a solid default and refine them with your own city’s dates below.
Make it local
These windows use zone 10's typical frost dates (last frost ~Jan 25, first frost ~Dec 20). For windows computed from your frost dates, run the ZIP code frost lookup and open the planting calendar — it remembers your city. The seed starting scheduler turns the whole seed rack into one printable, date-sorted list.
Frequently asked questions
When do I plant sunflowers in zone 10?
Direct sow Feb 1 – Feb 8, counted from zone 10's typical last frost around Jan 25. It has no frost tolerance — a late frost after planting means covering it or replanting.
Can I direct sow sunflowers in zone 10?
Yes — direct sow Feb 1 – Feb 8. This crop prefers direct sowing; its roots dislike transplanting.