Last frost date in Philadelphia, Pennsylvania
March 30
Average last frost in spring. In an early year (1 in 10) it's over by March 15; in a late year (1 in 10) it comes after April 12.
November 17
Average first frost in fall. 1 year in 10 it comes by November 4.
Source: NOAA U.S. Climate Normals 1991–2020, station Phila Franklin Inst (USC00366886), 4.1 miles from Philadelphia, elevation 60 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 15 | Mar 30 | Apr 12 |
| First frost in fall | Nov 4 | Nov 17 | Dec 4 |
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: 232
Planting calendar for Philadelphia
Fall planting
USDA dates for places whose average first freeze is about November 20 (Philadelphia: November 17).
- 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 March 30 (Philadelphia: March 30).
- Corn saladJan 15 – Mar 15
- RutabagaFeb 1 – Mar 1
- SpinachFeb 1 – Mar 20
- Garden peasFeb 10 – Mar 20
- GarlicFeb 10 – Mar 10
- Asparagus plantsFeb 15 – Mar 20
- Cabbage plantsFeb 15 – Mar 10
- Chervil and chivesFeb 15 – Mar 15
- Leaf lettuceFeb 15 – Apr 15
- LeeksFeb 15 – Mar 15
- Onion plants plantsFeb 15 – Mar 15
- Onion setsFeb 15 – Mar 20
- RadishesFeb 15 – May 1
- ShallotsFeb 15 – Mar 15
- Cauliflower plantsFeb 20 – Mar 20
- DandelionFeb 20 – Mar 20
- Onion seedFeb 20 – Mar 15
- PotatoesFeb 20 – Mar 20
- SorrelFeb 20 – Apr 1
- TurnipsFeb 20 – Mar 20
- BeetsMar 1 – June 1
- Broccoli plantsMar 1 – 20
- Brussels sprouts plantsMar 1 – 20
- CarrotsMar 1 – Apr 10
- Collards plantsMar 1 – June 1
- Head lettuce plantsMar 1 – 20
- Horseradish plantsMar 1 – Apr 1
- KaleMar 1 – 20
- KohlrabiMar 1 – Apr 1
- Mustard greensMar 1 – Apr 15
- ParsleyMar 1 – Apr 1
- ParsnipsMar 1 – Apr 1
- SalsifyMar 1 – 15
- Swiss chardMar 1 – May 25
- Upland cressMar 1 – Apr 1
- EndiveMar 10 – Apr 10
- Florence fennelMar 10 – Apr 10
- Celery and celeriac plantsMar 15 – Apr 15
- Sweet cornMar 25 – May 15
- Snap beansApr 1 – June 1
- Cantaloupe (muskmelon)Apr 10 – May 15
- CucumbersApr 10 – May 15
- New Zealand spinachApr 10 – June 1
- OkraApr 10 – June 15
- Summer squashApr 10 – June 1
- TomatoesApr 10 – June 1
- WatermelonApr 10 – May 15
- Black-eyed peasApr 15 – July 1
- Eggplant plantsApr 15 – May 15
- Lima beansApr 15 – June 20
- Peppers plantsApr 15 – June 1
- SoybeansApr 20 – June 30
- Sweet potatoesApr 20 – June 1
- Witloof chicoryJune 1 – July 1
USDA lists chinese cabbage 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 Pennsylvania
- Yeadon 8 mi · last frost Apr 2
- Lansdowne 9 mi · last frost Apr 2
- Darby 9 mi · last frost Apr 2
- Norristown 13 mi · last frost Apr 8
- Chester 17 mi · last frost Mar 30