Zone 10 · winter lows 30°F to 40°F
December garden checklist for Zone 10
Every December job that matters, limited to plants that actually survive Zone 10 winters (30°F to 40°F). Last frost lands around rare.
Prune in December
Cut back plants to 2-3 inches after flowering ceases or heavy frost
Mulch in December
Apply a thick layer of mulch over the root zone for winter protection.
Winter Prep in December
Mound soil or mulch 10-12 inches high around the base for protection
What's blooming in December
In flower around now and hardy in Zone 10.
Frost dates and bloom windows are typical ranges, not guarantees — your microclimate moves them by weeks. Sow uses your real local forecast instead.
December questions
What should I be doing in my Zone 10 garden in December?
The jobs that matter most this month are prune, mulch, winter prep. Each section above lists the specific plants that need that job in December, filtered to what survives Zone 10 — drawn from the care schedules of the plants gardeners actually grow.
When is the last frost in Zone 10?
In Zone 10, the last spring frost typically lands around rare and the first fall frost around rare, with winter lows of 30°F to 40°F. Those two dates bracket most planting decisions — check your local forecast before acting on either, since microclimate and elevation shift them by weeks.
What's blooming in December?
Valley Violet California Lilac, Arizona Cypress, Purple Daydream Chinese Fringe Flower, 'Margarita' Carolina Jessamine, Turquoise Hyacinth and others are in flower around now in Zone 10. The full list is above.
Keep exploring
Nearby months
Get December's tasks for your own plants
Sow builds this checklist from the plants actually in your yard — and adjusts it to your real forecast, so a wet week skips the watering and a frost warning reaches you first.