FrostCal

When to Plant Radishes in California

In a typical California location, sow outdoors Dec 12 – Dec 26. Across the state, the outdoor planting window starts as early as Nov 24 in San Mateo and as late as Apr 22 in Big Bear City. For a fall crop, plant around Nov 6 – Nov 20. 103 cities in California are essentially frost-free and can plant on a year-round schedule.

Method Direct sow
Days to maturity 22–30 days

Very fast and cold-hardy; direct sow 3-5 weeks before last frost, as soon as soil can be worked.

Radishes Planting Dates by City

CityDirect sowFall planting
Los AngelesFrost-free: year-round planting
San DiegoFrost-free: year-round planting
San JoseNov 28 – Dec 12Nov 13 – Nov 27
San FranciscoFrost-free: year-round planting
FresnoDec 10 – Dec 24Nov 2 – Nov 16
SacramentoDec 8 – Dec 22Nov 4 – Nov 18
Long BeachFrost-free: year-round planting
OaklandFrost-free: year-round planting
BakersfieldDec 27 – Jan 10Oct 27 – Nov 10
AnaheimFrost-free: year-round planting
RiversideDec 5 – Dec 19Nov 13 – Nov 27
Santa AnaFrost-free: year-round planting
StocktonJan 1 – Jan 15Oct 27 – Nov 10
Chula VistaFrost-free: year-round planting
IrvineFrost-free: year-round planting
FremontDec 3 – Dec 17Nov 10 – Nov 24
San BernardinoDec 23 – Jan 6Nov 7 – Nov 21
FontanaDec 6 – Dec 20Nov 21 – Dec 5
ModestoDec 27 – Jan 10Oct 24 – Nov 7
OxnardFrost-free: year-round planting
Moreno ValleyDec 23 – Jan 6Nov 7 – Nov 21
Huntington BeachFrost-free: year-round planting
GlendaleNov 28 – Dec 12Nov 14 – Nov 28
Santa ClaritaDec 4 – Dec 18Nov 20 – Dec 4
Santa RosaJan 21 – Feb 4Oct 20 – Nov 3
OceansideFrost-free: year-round planting
Garden GroveFrost-free: year-round planting
Rancho CucamongaNov 30 – Dec 14Nov 18 – Dec 2
OntarioNov 30 – Dec 14Nov 18 – Dec 2
Elk GroveDec 29 – Jan 12Oct 21 – Nov 4

Showing the 30 most populous of 530 California cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all California cities.

Frequently Asked Questions

When should I plant radishes in California?

In a typical California location, sow outdoors Dec 12 – Dec 26. Across the state, the outdoor planting window starts as early as Nov 24 in San Mateo and as late as Apr 22 in Big Bear City. For a fall crop, plant around Nov 6 – Nov 20. 103 cities in California are essentially frost-free and can plant on a year-round schedule.

When is the last frost in California?

The average last spring frost in California ranges from January 1 in Palm Springs to December 31 in Sunland, based on NOAA 1991–2020 climate normals.

How long do radishes take to grow?

Radishes typically take 22–30 days from planting to harvest. Very fast and cold-hardy; direct sow 3-5 weeks before last frost, as soon as soil can be worked.

Other Crops in California

When to plant radishes in other states

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