Frost dates for Pearblossom, CA
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
March 13
typical year
Safe to plant
April 17
frost is over in 9 of 10 years
First fall frost
December 1
typical year
Growing season
258 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | – | Feb 13 – 27 | – |
| Spinach | – | Jan 30 – Feb 20 | Oct 6 – 20 |
| Lettuce | – | Feb 13 – Mar 6 | Oct 6 – 20 |
| Radishes | – | Feb 13 – Mar 27 | Oct 20 – Nov 3 |
| Onions | – | Feb 13 – 27 | – |
| Potatoes | – | Feb 20 – Mar 6 | – |
| Carrots | – | Feb 20 – Mar 13 | Sep 8 – 22 |
| Beets | – | Feb 13 – 27 | Sep 22 – Oct 6 |
| Kale | Jan 2 – 16 | Feb 13 – 27 | Sep 22 – Oct 6 |
| Broccoli | Jan 2 – 16 | Feb 27 – Mar 13 | Sep 22 – Oct 6 |
| Cabbage | Dec 19 – Jan 2 | Feb 13 – 27 | Sep 22 – Oct 6 |
| Garlic | – | – | Oct 20 – Nov 10 |
| Warm-season crops | |||
| Tomatoes | Feb 20 – Mar 6 | Apr 17 – May 1 | – |
| Peppers | Feb 13 – 27 | Apr 24 – May 8 | – |
| Cucumbers | – | Apr 17 – May 8 | – |
| Zucchini | – | Apr 17 – May 15 | – |
| Pumpkins | – | Apr 17 – May 8 | – |
| Green beans | – | Apr 17 – Sep 22 | – |
| Sweet corn | – | Apr 17 – May 15 | – |
| Basil | Mar 13 – 27 | Apr 24 – May 1 | – |
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | April 17 | March 13 | February 10 |
| Fall frost before | November 12 | December 1 | December 18 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around February 9 (March 18 in a late year), and the first one in fall around December 12.
Where these dates come from
NOAA weather station PEARBLOSSOM, CA US (USC00046773), 1991–2020 climate normals. It's the nearest station for 5 zip codes, all within 11 miles:
93543, 93544, 93550, 93553, 93591
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.