Last frost date in Maricopa, Arizona
February 23
Average last frost in spring. In an early year (1 in 10) it's over by January 29; in a late year (1 in 10) it comes after March 15.
November 24
Average first frost in fall. 1 year in 10 it comes by November 10.
Source: NOAA U.S. Climate Normals 1991–2020, station Maricopa 4 N (USC00025270), 5.3 miles from Maricopa, elevation 1,160 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Jan 29 | Feb 23 | Mar 15 |
| First frost in fall | Nov 10 | Nov 24 | Dec 8 |
An early or late year is one in 10: 1 year in 10 the frost comes before the early date, and 1 year in 10 after the late date.
Frost-free days in an average year: 274
Planting calendar for Maricopa
Fall planting
USDA dates for places whose average first freeze is about November 20 (Maricopa: November 24).
- CucumbersJune 1 – Aug 15 (past for this year)
- Eggplant plantsJune 1 – Aug 1 (past for this year)
- New Zealand spinachJune 1 – Aug 15 (past for this year)
- OkraJune 1 – Sept 10 (past for this year)
- Peppers plantsJune 1 – Aug 15 (past for this year)
- SoybeansJune 1 – July 30 (past for this year)
- Summer squashJune 1 – Aug 20 (past for this year)
- Sweet cornJune 1 – Sept 1 (past for this year)
- Sweet potatoesJune 1 – July 1 (past for this year)
- Swiss chardJune 1 – Oct 1 (past for this year)
- TomatoesJune 1 – Aug 1 (past for this year)
- Black-eyed peasJuly 1 – Sept 1 (past for this year)
- Snap beansJuly 1 – Sept 10 (past for this year)
- Winter squashJuly 1 – Aug 1 (past for this year)
- Celery and celeriac plantsJuly 15 – Sept 1 (past for this year)
- Lima beansJuly 15 – Sept 1 (past for this year)
- SalsifyJuly 15 – Aug 15 (past for this year)
- Witloof chicoryJuly 20 – Sept 1 (past for this year)
- Broccoli plantsAug 1 – Sept 15 (past for this year)
- Brussels sprouts plantsAug 1 – Sept 15 (past for this year)
- Cauliflower plantsAug 1 – Sept 15 (past for this year)
- ParsnipsAug 1 – Sept 1 (past for this year)
- RutabagaAug 1 – Sept 1 (past for this year)
- PotatoesAug 10 – Sept 15 (past for this year)
- Florence fennelAug 15 – Sept 15 (past for this year)
- GarlicAug 15 – Oct 1 (past for this year)
- KaleAug 15 – Oct 15 (past for this year)
- ShallotsAug 15 – Oct 1 (past for this year)
- SorrelAug 15 – Oct 15 (past for this year)
- Collards plantsAug 25 – Nov 1Now
- BeetsSept 1 – Dec 1Now
- Cabbage plantsSept 1 – Dec 1Now
- CarrotsSept 1 – Nov 1Now
- Chinese cabbageSept 1 – Oct 15 (past for this year)
- DandelionSept 1 – Nov 1Now
- EndiveSept 1 – Oct 1 (past for this year)
- Head lettuce plantsSept 1 – Nov 1Now
- KohlrabiSept 1 – Oct 15 (past for this year)
- Leaf lettuceSept 1 – Nov 1Now
- LeeksSept 1 – Nov 1Now
- Mustard greensSept 1 – Dec 1Now
- Onion seedSept 1 – Nov 1Now
- ParsleySept 1 – Dec 31Now
- RadishesSept 1 – Dec 1Now
- TurnipsSept 1 – Nov 15Now
- Corn saladOct 1 – Dec 1Now
- Garden peasOct 1 – Dec 1Now
- Onion plants plantsOct 1 – Dec 31Now
- SpinachOct 1 – Dec 1Now
- Upland cressOct 1 – Dec 1Now
- Chervil and chivesNov 1 – Dec 31Soon
- Onion setsNov 1 – Dec 31Soon
USDA lists horseradish as generally spring-planted here.
Spring planting
USDA dates for places whose average last freeze is about February 18 (Maricopa: February 23).
- Cabbage plantsJan 1 – Feb 25
- Chervil and chivesJan 1 – Feb 1
- Collards plantsJan 1 – Mar 15
- Corn saladJan 1 – Mar 15
- Garden peasJan 1 – Mar 1
- Head lettuce plantsJan 1 – Feb 1
- Leaf lettuceJan 1 – Mar 15
- LeeksJan 1 – Feb 15
- Onion plants plantsJan 1 – 15
- Onion seedJan 1 – 15
- Onion setsJan 1 – 15
- ParsleyJan 1 – 30
- ParsnipsJan 1 – Feb 1
- RadishesJan 1 – Apr 1
- ShallotsJan 1 – Feb 20
- SpinachJan 1 – Mar 1
- Cauliflower plantsJan 10 – Feb 10
- TurnipsJan 10 – Mar 1
- Broccoli plantsJan 15 – Feb 15
- Brussels sprouts plantsJan 15 – Feb 15
- CarrotsJan 15 – Mar 1
- DandelionJan 15 – Feb 15
- EndiveJan 15 – Mar 1
- Florence fennelJan 15 – Mar 1
- PotatoesJan 15 – Mar 1
- SalsifyJan 15 – Feb 20
- SorrelJan 15 – Mar 1
- Upland cressJan 15 – Feb 15
- BeetsJan 20 – Apr 1
- Celery and celeriac plantsJan 20 – Feb 20
- KaleJan 20 – Feb 10
- KohlrabiJan 20 – Feb 10
- Swiss chardJan 20 – Apr 15
- Cantaloupe (muskmelon)Feb 15 – Apr 15
- CucumbersFeb 15 – Apr 15
- Mustard greensFeb 15 – Apr 15
- WatermelonFeb 15 – Apr 15
- Eggplant plantsFeb 20 – Apr 1
- Sweet cornFeb 20 – Apr 15
- Black-eyed peasMar 1 – June 15
- Lima beansMar 1 – May 1
- New Zealand spinachMar 1 – Apr 15
- OkraMar 1 – June 1
- Peppers plantsMar 1 – May 1
- Snap beansMar 1 – May 1
- Summer squashMar 1 – Apr 15
- TomatoesMar 1 – Apr 20
- SoybeansMar 10 – June 30
- Sweet potatoesMar 20 – June 1
USDA lists chinese cabbage, garlic as generally fall-planted here.
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5 (earliest safe spring and latest safe fall dates), applied to this place's NOAA frost dates. “Plants” means setting out transplants, not sowing seed. How we match the table.
Nearby in Arizona
- Casa Grande 17 mi · last frost Feb 5
- Chandler 19 mi · last frost Feb 13
- Gilbert 24 mi · last frost Feb 1
- Tempe 24 mi · last frost Feb 13
- Goodyear 26 mi · last frost Jan 14