Zone 10a planting calendar
What to plant in August — zone 10a
Zone 10a averages its last spring frost around January 30 and its first fall frost around December 25. Everything below is timed from those two dates, so it stays useful whether you're planting for summer or for a fall harvest.
Last frost: January 30
First frost: December 25
Winter lows: 30 to 35 °F
Plan & order
- Order fall seedaround Aug 27
Fall brassicas and greens get sown in the heat of summer — have the seed on hand before that window opens.
Start indoors for fall
- Broccoliaround Aug 30
Fall broccoli window opens — sow trays any time in the next four weeks.
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