Growing potatoes in zone 9
Plant certified seed potatoes 2–4 weeks before last frost — sprouts emerging into a late freeze regrow. Hill soil up around stems twice; tubers exposed to light turn green and bitter.
Zone 9 covers gulf Coast, central Florida, central California, Phoenix and Tucson — summer heat is the limiting factor — many "spring" crops grow best in fall and winter. 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 9's typical frost dates (last frost ~Feb 20, first frost ~Dec 1). 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 potatoes in zone 9?
Direct sow Jan 23 – Feb 6, counted from zone 9's typical last frost around Feb 20. It handles a light frost but not a hard freeze, so watch the forecast early in the window.
Can I direct sow potatoes in zone 9?
Yes — direct sow Jan 23 – Feb 6. This crop prefers direct sowing; its roots dislike transplanting.