In Pennsylvania, the onion season typically runs early July to late September, with peak availability mid-July through late August. Exact weeks shift a little with each year's weather.
Can I pick my own onions in Pennsylvania?
U-pick onion fields are basically unheard of — buy braids and bags straight off the farm stand. The best market weeks are mid-July through late August.
How long does onion season last in Pennsylvania?
about 13 weeks end to end — early July to late September. The early and late shoulders are real but lighter; the solid stretch of chalk on the band is the sure bet.