When to plant · 202 cities · zones 8a–11a

When to plant mustard greens in California

Direct sow mustard greens around Feb 7 — the California statewide median, counted from a last spring frost of Feb 7 across 1,426 ZIP codes and 311 NOAA stations.

Feb 7Direct sowJan 5 – May 4 across the state
Feb 7Last spring frostmedian · 1 in 10 years after Mar 12
Mar 9First harvest30 days from sow

The rule: Direct sow as soon as the soil can be worked in spring, and again in late summer for fall. Seed germinates fastest at 55–65 °F and may stall above 80 °F.

California mustard greens, by step

Statewide median last frost Feb 7, first fall frost Dec 7, 2027 season. Each cultivar's own indoor lead time and days to maturity, same engine as the Plan Builder.

CultivarStart indoorsSowFirst harvestDays
Mustard greensGarnet Giant (Brassica juncea)Direct sowFeb 7Mar 930 from sow

Tight means first harvest lands within two weeks of the median first fall frost. Statewide dates are the ZIP-weighted median of every NOAA 1991–2020 station California's ZIP codes resolve to; 375 of 1,801 ZIPs have no datable freeze and are left out.

Mustard Greens in California, city by city

Mustard greens, scheduled from each city's nearest NOAA station — the same dates as its frost page.

CityLast frostSowFirst harvest
Los Angeleszone 10bfrost rareJan 31Mar 2
San Diegozone 10bfrost rareJan 31Mar 2
San Josezone 9bJan 2Jan 2Feb 1
Fresnozone 9bJan 14Jan 14Feb 13
Sacramentozone 9bJan 12Jan 12Feb 11
Long Beachzone 10bfrost rareJan 31Mar 2
Oaklandzone 10afrost rareJan 31Mar 2
Bakersfieldzone 9bJan 31Jan 31Mar 2
Anaheimzone 10afrost rareJan 31Mar 2
Stocktonzone 9bFeb 5Feb 5Mar 7
Riversidezone 10aJan 9Jan 9Feb 8
Irvinezone 10aJan 5Jan 5Feb 4
Santa Anazone 10bfrost rareJan 31Mar 2
Chula Vistazone 10bJan 6Jan 6Feb 5
Santa Claritazone 10aJan 8Jan 8Feb 7
Fremontzone 10aJan 1Jan 1Jan 31
San Bernardinozone 10aMay 5May 5Jun 4
Modestozone 9bJan 31Jan 31Mar 2
Fontanazone 10aJan 4Jan 4Feb 3
Moreno Valleyzone 9bJan 10Jan 10Feb 9
Oxnardzone 10bfrost rareJan 31Mar 2
Huntington Beachzone 10bfrost rareJan 31Mar 2
Glendalezone 10aJan 8Jan 8Feb 7
Ontariozone 10aJan 4Jan 4Feb 3
Elk Grovezone 9bFeb 2Feb 2Mar 4
Santa Rosazone 9aFeb 25Feb 25Mar 27
Rancho Cucamongazone 10aJan 4Jan 4Feb 3
Garden Grovezone 10bfrost rareJan 31Mar 2
Oceansidezone 10aJan 23Jan 23Feb 22
Lancasterzone 8aApr 3Apr 3May 3
Rosevillezone 9bFeb 25Feb 25Mar 27
Palmdalezone 8bMar 10Mar 10Apr 9
Coronazone 10aJan 17Jan 17Feb 16
Salinaszone 9bJan 29Jan 29Feb 28
Haywardzone 10aJan 2Jan 2Feb 1
Sunnyvalezone 10aJan 6Jan 6Feb 5
Escondidozone 10aJan 2Jan 2Feb 1
Pomonazone 10aJan 8Jan 8Feb 7
Visaliazone 9bJan 23Jan 23Feb 22
Victorvillezone 8bMar 18Mar 18Apr 17
Fullertonzone 10bfrost rareJan 31Mar 2
Torrancezone 10bJan 9Jan 9Feb 8
Orangezone 10bfrost rareJan 31Mar 2
Pasadenazone 10aJan 8Jan 8Feb 7
Santa Clarazone 9bJan 12Jan 12Feb 11
Cloviszone 9bJan 14Jan 14Feb 13
Simi Valleyzone 10aJan 24Jan 24Feb 23
Thousand Oakszone 10afrost rareJan 31Mar 2
Concordzone 9bJan 9Jan 9Feb 8
Vallejozone 9bMar 5Mar 5Apr 4
Fairfieldzone 9bJan 15Jan 15Feb 14
Berkeleyzone 10aJan 3Jan 3Feb 2
Antiochzone 9bJan 12Jan 12Feb 11
Menifeezone 9bJan 28Jan 28Feb 27
Richmondzone 10aJan 4Jan 4Feb 3
Carlsbadzone 10bfrost rareJan 31Mar 2
Murrietazone 9bFeb 2Feb 2Mar 4
Temeculazone 9bFeb 2Feb 2Mar 4
Santa Mariazone 9bFeb 4Feb 4Mar 6
San Buenaventura (Ventura)zone 10afrost rareJan 31Mar 2
Downeyzone 10bfrost rareJan 31Mar 2
Costa Mesazone 10bfrost rareJan 31Mar 2
Jurupa Valleyzone 10aJan 9Jan 9Feb 8
West Covinazone 10aJan 8Jan 8Feb 7
Rialtozone 10aJan 10Jan 10Feb 9
El Montezone 10bJan 4Jan 4Feb 3
Vacavillezone 9bFeb 18Feb 18Mar 20
Burbankzone 10aJan 2Jan 2Feb 1
El Cajonzone 10aJan 6Jan 6Feb 5
San Mateozone 10afrost rareJan 31Mar 2
Chicozone 9bMar 4Mar 4Apr 3
Inglewoodzone 10bfrost rareJan 31Mar 2
Hesperiazone 8bMay 5May 5Jun 4
Daly Cityzone 10afrost rareJan 31Mar 2
Tracyzone 9bJan 19Jan 19Feb 18
Vistazone 10aJan 30Jan 30Mar 1
Norwalkzone 10bfrost rareJan 31Mar 2
San Marcoszone 10aJan 2Jan 2Feb 1
Mercedzone 9aMar 3Mar 3Apr 2
Mantecazone 9bFeb 6Feb 6Mar 8
Indiozone 10afrost rareJan 31Mar 2
Chinozone 9bJan 17Jan 17Feb 16
Reddingzone 9aMar 3Mar 3Apr 2
Hemetzone 9bJan 31Jan 31Mar 2
Mission Viejozone 10bJan 5Jan 5Feb 4
Carsonzone 10bfrost rareJan 31Mar 2
Comptonzone 10bfrost rareJan 31Mar 2
South Gatezone 10bfrost rareJan 31Mar 2
Santa Monicazone 11afrost rareJan 15Feb 14
Westminsterzone 10afrost rareJan 31Mar 2
Folsomzone 9bJan 12Jan 12Feb 11
Mountain Viewzone 9bJan 6Jan 6Feb 5
Santa Barbarazone 10bJan 13Jan 13Feb 12
Lake Forestzone 10bJan 5Jan 5Feb 4
Citrus Heightszone 9bJan 12Jan 12Feb 11
San Leandrozone 10aJan 7Jan 7Feb 6
San Ramonzone 9bFeb 15Feb 15Mar 17
Whittierzone 10bfrost rareJan 31Mar 2
Livermorezone 9bFeb 15Feb 15Mar 17
Rancho Cordovazone 9bJan 12Jan 12Feb 11
Hawthornezone 10bfrost rareJan 31Mar 2
Perriszone 9bJan 10Jan 10Feb 9
Redwood Cityzone 10aJan 17Jan 17Feb 16
Newport Beachzone 10bfrost rareJan 31Mar 2
Buena Parkzone 10afrost rareJan 31Mar 2
Alhambrazone 10aJan 4Jan 4Feb 3
Milpitaszone 10aJan 12Jan 12Feb 11
Uplandzone 10aJan 4Jan 4Feb 3
Tustinzone 10afrost rareJan 31Mar 2
Alamedazone 10aJan 7Jan 7Feb 6
Lakewoodzone 10afrost rareJan 31Mar 2
Chino Hillszone 10aJan 17Jan 17Feb 16
Pittsburgzone 9bJan 9Jan 9Feb 8
Napazone 9bFeb 12Feb 12Mar 14
Bellflowerzone 10bfrost rareJan 31Mar 2
Pleasantonzone 9bFeb 15Feb 15Mar 17
Rocklinzone 9bFeb 25Feb 25Mar 27
Apple Valleyzone 8bMar 18Mar 18Apr 17
Redlandszone 10aJan 27Jan 27Feb 26
Lake Elsinorezone 9bJan 28Jan 28Feb 27
Turlockzone 9bJan 6Jan 6Feb 5
Tularezone 9bJan 23Jan 23Feb 22
Walnut Creekzone 9bMar 8Mar 8Apr 7
Eastvalezone 10aJan 17Jan 17Feb 16
Dublinzone 9bFeb 15Feb 15Mar 17
Camarillozone 10afrost rareJan 31Mar 2
Baldwin Parkzone 10aJan 4Jan 4Feb 3
Yuba Cityzone 9bFeb 11Feb 11Mar 13
Maderazone 9bFeb 12Feb 12Mar 14
Lodizone 9bFeb 9Feb 9Mar 11
Redondo Beachzone 11afrost rareJan 15Feb 14
Palo Altozone 9bFeb 1Feb 1Mar 3
Daviszone 9bFeb 10Feb 10Mar 12
Yorba Lindazone 10afrost rareJan 31Mar 2
Brentwoodzone 9bJan 12Jan 12Feb 11
Union Cityzone 9bJan 2Jan 2Feb 1
South San Franciscozone 10afrost rareJan 31Mar 2
Laguna Niguelzone 10bJan 6Jan 6Feb 5
Lynwoodzone 10bfrost rareJan 31Mar 2
Portervillezone 9bFeb 20Feb 20Mar 22
Woodlandzone 9bFeb 7Feb 7Mar 9
San Clementezone 10bJan 6Jan 6Feb 5
Santa Cruzzone 9bJan 29Jan 29Feb 28
La Habrazone 10afrost rareJan 31Mar 2
Encinitaszone 10afrost rareJan 31Mar 2
La Mesazone 10bJan 6Jan 6Feb 5
Montebellozone 10bJan 4Jan 4Feb 3
Hanfordzone 9aFeb 7Feb 7Mar 9
Gilroyzone 9bFeb 24Feb 24Mar 26
San Rafaelzone 10aJan 11Jan 11Feb 10
Beaumontzone 9bJan 31Jan 31Mar 2
Petalumazone 9bFeb 28Feb 28Mar 30
Pico Riverazone 10bJan 4Jan 4Feb 3
Santeezone 10aJan 6Jan 6Feb 5
Gardenazone 10bfrost rareJan 31Mar 2
Cupertinozone 9bMar 21Mar 21Apr 20
National Cityzone 10bfrost rareJan 31Mar 2
Monterey Parkzone 10bJan 4Jan 4Feb 3
Highlandzone 10aJan 27Jan 27Feb 26
Lincolnzone 9aFeb 25Feb 25Mar 27
Fountain Valleyzone 10bfrost rareJan 31Mar 2
West Sacramentozone 9bFeb 2Feb 2Mar 4
San Jacintozone 9bJan 31Jan 31Mar 2
Arcadiazone 10aJan 4Jan 4Feb 3
Yucaipazone 9bJan 27Jan 27Feb 26
Coltonzone 10aJan 10Jan 10Feb 9
Placentiazone 10bfrost rareJan 31Mar 2
Delanozone 9bJan 31Jan 31Mar 2
Palm Desertzone 10afrost rareJan 31Mar 2
Cathedral Cityzone 10aJan 9Jan 9Feb 8
Novatozone 9bJan 11Jan 11Feb 10
Diamond Barzone 10aJan 8Jan 8Feb 7
Huntington Parkzone 10bfrost rareJan 31Mar 2
Watsonvillezone 9bJan 31Jan 31Mar 2
Paramountzone 10bfrost rareJan 31Mar 2
Aliso Viejozone 10bJan 6Jan 6Feb 5
Glendorazone 10aJan 8Jan 8Feb 7
San Luis Obispozone 9bJan 16Jan 16Feb 15
Rosemeadzone 10bJan 4Jan 4Feb 3
Powayzone 10aMar 4Mar 4Apr 3
Cypresszone 10afrost rareJan 31Mar 2
Cereszone 9bJan 31Jan 31Mar 2
Covinazone 10aJan 8Jan 8Feb 7
Los Banoszone 9aJan 26Jan 26Feb 25
Azusazone 10aApr 28Apr 28May 28
Breazone 10afrost rareJan 31Mar 2
Oakleyzone 9bJan 12Jan 12Feb 11
Cerritoszone 10afrost rareJan 31Mar 2
La Miradazone 10afrost rareJan 31Mar 2
Rancho Santa Margaritazone 10bfrost rareJan 31Mar 2
Newarkzone 10aJan 1Jan 1Jan 31
Morgan Hillzone 9bFeb 24Feb 24Mar 26
Palm Springszone 10aJan 9Jan 9Feb 8
Coachellazone 10aFeb 7Feb 7Mar 9
Hollisterzone 9bFeb 19Feb 19Mar 21
Rohnert Parkzone 9aFeb 28Feb 28Mar 30
El Centrozone 10aJan 3Jan 3Feb 2
Lompoczone 10aJan 20Jan 20Feb 19
Danvillezone 9bMar 8Mar 8Apr 7
Campbellzone 9bFeb 2Feb 2Mar 4
San Brunozone 10aJan 11Jan 11Feb 10
Stantonzone 10afrost rareJan 31Mar 2

What California mustard greens need

StartSoil temperature and light intensity, indoors, weeks before your frost date.
  • Organic Seed Starter Potting MixMust have

    Seed-starting mix is not potting soil with a nicer label — it is finer, lighter, and low in nutrients on purpose, because a seedling's first roots want air and moisture, not fertiliser.

  • 72-Cell Trays with 1020 Bottoms, 5-PackMust have

    The cheap black nursery trays crack after one season and flex enough to break roots when you lift them. These do not. Over five seasons the price per use is lower than the throwaways.

ProtectFrost, hornworms, aphids, and the fungal pressure that follows a wet July.
  • AG-30 Frost Protection Row Cover

    AG-30 buys roughly 6 °F of frost protection while passing about 70% of light — enough to carry a crop through an early-October cold snap that would otherwise end your season two weeks short.

  • Ultra-Fine Garden Netting, 10×33 ft, 2 pcs

    A hornworm is a moth's decision made in June. Fine mesh over the bed at transplant means the moth never lands, and you never spray anything at all.

HarvestTiming, handling, and weighing what you actually got.
  • 6" Micro-Tip Pruning SnipsMust have

    Ninety percent of sauce-garden cutting is snipping a pepper stem or a basil node, and a fine-tipped snip does it better than any pruner. Pulling peppers by hand tears the branch.

  • Digital Kitchen Scale, 11 lb, g/ozMust have

    Fermentation brine is a percentage of weight, not a number of spoons. Without a gram scale you are not following a fermentation recipe — you are guessing at the one number that determines whether it is safe.

CookReduction, texture, and the non-reactive pans that keep tomato tasting like tomato.
  • One-Touch Coffee & Spice Grinder

    Dried cayenne into powder in fifteen seconds. Dedicate one to chiles — grind coffee in it afterwards and you will find out exactly how well capsaicin sticks to plastic.

PreserveTested processes, correct headspace, and jars that are still good next March.
  • Half Pint (8 oz) Regular Mouth Mason Jars, 12Must have

    Eight ounces is the right jar for a sauce you use by the spoonful. Open a quart of hot sauce and you are racing the fridge; open a half-pint and you finish it while it is still good.

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Mustard Greens in California: questions

When should I plant mustard greens in California?

Direct sow around Feb 7 at the statewide median; across the state that date runs from Jan 5 in the warmest tenth of California's ZIP codes to May 4 in the coldest. To cut the freeze risk to one year in ten, count from Mar 12 instead of the median last frost. Use the city table for your own town.

When is the last frost in California?

The ZIP-weighted median of NOAA 1991–2020 station medians is Feb 7. In the warmest tenth of California's ZIP codes the median last frost falls on or before Jan 5; in the coldest tenth, on or after May 4.

When will California mustard greens be ready to harvest?

Mustard greens planted on the statewide date is ready around Mar 9: 30 days from sow.

More for California

Mustard Greens in every state → · California frost dates → · How frost-date math works →