Zone 9b planting calendar
What to plant in August — zone 9b
Zone 9b averages its last spring frost around February 15 and its first fall frost around December 15. 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: February 15
First frost: December 15
Winter lows: 25 to 30 °F
Plan & order
- Order fall seedaround Aug 17
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 20
Fall broccoli window opens — sow trays any time in the next four weeks.
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