Zone 12b Planting Calendar
Zone 12b has an average minimum temperature range of 55°F to 60°F. The average last spring frost is around January 1 and the first fall frost is around December 31, giving you approximately 364 days in the growing season.
There are 4 plants in our database that grow well in Zone 12b.
States That Include Zone 12b
Many states span multiple zones. The states highlighted below contain areas classified as Zone 12b.
Growing Season Comparison
All Planting Windows at a Glance
This chart shows when to start, transplant, sow, and harvest every plant in Zone 12b.
Vegetables for Zone 12b
| Plant | Start Indoors | Direct Sow | Transplant | Harvest | Days to Maturity |
|---|---|---|---|---|---|
| Ginger | Nov 20 | Jan 1 | Jan 8 | Sep 10 – Nov 19 | 240–300 |
| Microgreens | Dec 4 | Dec 11 | Jan 1 | Jan 8 – Feb 5 | 7–21 |
| Turmeric | Nov 20 | Jan 1 | Jan 8 | Sep 10 – Nov 19 | 240–300 |
| Yam | Nov 20 | Jan 1 | Jan 8 | Jul 9 – Dec 24 | 180–330 |
Recommended for Your Garden
Reduce heat stress and sun scorch in hot climates with UV-stabilized shade cloth.
Start seeds indoors with reusable cell trays and humidity domes.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Frequently Asked Questions
What can I grow in Zone 12b?
Zone 12b supports 4 plants in our database including vegetables, herbs, fruits, and flowers. With a 364-day growing season (last frost ~January 1, first frost ~December 31), you can grow most common garden crops with proper timing.
What is Zone 12b?
USDA Zone 12b has an average annual minimum temperature of 55°F to 60°F.
When is the last frost in Zone 12b?
The average last spring frost in Zone 12b is approximately January 1. The first fall frost averages around December 31, giving a growing season of about 364 days. These dates are based on 50% probability — plan for some year-to-year variation.
