Growing sunflowers in zone 8
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 8 covers deep South, central Texas, coastal Pacific Northwest — two full gardens a year — a spring/summer garden and a serious fall/winter one. 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 8's typical frost dates (last frost ~Mar 15, first frost ~Nov 15). 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 8?
Direct sow Mar 22 – Mar 29, counted from zone 8's typical last frost around Mar 15. It has no frost tolerance — a late frost after planting means covering it or replanting.
Can I direct sow sunflowers in zone 8?
Yes — direct sow Mar 22 – Mar 29. This crop prefers direct sowing; its roots dislike transplanting.