California Gardening Guide (2026)

Coastal, valley, desert and mountain microclimates. Mild winters allow near-continuous production.

Garden countdownToday: Aug 19

USDA 2023 zones + NOAA 1991-2020 frost normals. Estimates — check your local forecast before planting.

USDA hardiness zone
511
Region
Pacific West
Typical last spring frost
02/15
Typical first fall frost
12/01
Frost-free season
289 days
Lawn grass type
Cool / warm

Quick answer (California): Most of the state gardens in USDA zones 511 with about a 289-day frost-free window. Plan around the typical last frost of 02/15; start warm-season crops indoors ~6 weeks earlier. Source: USDA Plant Hardiness Zone Map (2023) + state cooperative extension typical freeze dates.

Your California planting calendar

Pre-filled for California. Pick a crop to see indoor start, sow/transplant, and harvest dates you can print.

In California (typical zone 511, last frost ≈ Feb 15, first frost ≈ Dec 1, 289-day season), your Tomato plan:

Start seeds indoors
Jan 4
Sow / transplant outdoors
Mar 1
First harvest
May 10
Spacing / depth
24″ / 0.25

Month-by-month (California, 2026)

MonthAction
JanStart indoors
Feb
MarSow · Transplant
Apr
MayHarvest
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Start indoors 6 weeks before last frost; transplant after soil warms. Zones 313 suitable. Dates are typical; confirm with your county extension and watch the 10-day forecast.

Lawns in California

Best grass types for your climate:

Kentucky BluegrassTall FescuePerennial RyegrassFine FescueBermudagrassZoysiagrassSt. AugustinegrassBuffalograss

Open the lawn care scheduler →

Common pests in California

The pests most reported in your region, with organic-first treatments:

AphidsWhiteflyGarden SnailLeaf-Footed Bug

Aphids

Targets
Most vegetables, roses, ornamentals
Signs
Clusters of tiny soft bugs on new growth; curled, sticky leaves (honeydew).
Organic / IPM first
Blast with water; release ladybugs; insecticidal soap or neem oil.
Chemical option (follow label)
Pyrethrin or imidacloprid soil drench for heavy infestations.
Prevention
Avoid excess nitrogen; attract beneficial insects with dill and alyssum.

What grows well in California

Crops suitable for zones 511:

CropTypeSpacingDays to harvest
TomatoWarm-season2470
PepperWarm-season1875
LettuceCool-season845
CarrotCool-season365
Green BeansWarm-season455
SpinachCool-season640
CucumberWarm-season1255
ZucchiniWarm-season3650
KaleCool-season1255
BroccoliCool-season1870

Figures are typical (30-year normals) from USDA and state extension services. Always confirm your local last/first freeze and product labels with your county extension before acting.