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Can You Grow Rhubarb in Pennsylvania?
US · USDA Zone 6a · zones 5a, 5b, 6a, 6b
Rhubarb thrives here — it is extremely cold-hardy and needs cold winters to perform well.
Plant zones
Pennsylvania last frost
Pennsylvania first frost
Days to harvest
About Rhubarb
Rhubarb is extremely cold-hardy and productive — plant once and harvest stalks every spring for decades.
Plant crowns in spring. Never harvest the first year. Never eat the leaves — they are toxic. Mulch crowns in autumn. Divide every 5-7 years. Rhubarb actually improves after cold winters.
Gardening in Pennsylvania
Pennsylvania has a humid continental climate. Philadelphia is Zone 7a; Pittsburgh is Zone 6a; northern Pennsylvania is Zone 5a-5b. Four distinct seasons with a 6-7 month growing window.
Frequently asked questions
Can you grow Rhubarb in Pennsylvania?
Rhubarb thrives here — it is extremely cold-hardy and needs cold winters to perform well.
What zone is Pennsylvania?
Pennsylvania spans USDA Zone 6a (5a, 5b, 6a, 6b).
When do you plant Rhubarb in Pennsylvania?
See the planting guide for Rhubarb — timing depends on your exact frost date.