January · Midwinter

What to sow in January in Philadelphia

2 crops are in their window this month in Philadelphia — timed to your local frost dates.

Last frost≈ 12 Apr
First frost≈ 11 Nov
Frost-free daysFrom 12 Apr
January averages29°–42°F

Vegetables

2 in season
Celeriac
Start indoors · sow indoors early — celeriac takes months to bulk up
Opens 18 Jan
Celery
Start indoors · keep soil consistently moist for tender, mild stalks
Opens 18 Jan

Herbs · nothing to sow this month

Fruit · nothing to sow this month