Can You Grow Rhubarb in Iowa?
US · USDA Zone 5a · zones 4a, 4b, 5a, 5b
Rhubarb thrives here — it is extremely cold-hardy and needs cold winters to perform well.
Plant zones
Iowa last frost
Iowa 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 Iowa
Iowa has a humid continental climate with cold winters and warm summers. Most of the state is Zone 5a-5b. Excellent for cool-season crops and hardy fruits.
Frequently asked questions
Can you grow Rhubarb in Iowa?
Rhubarb thrives here — it is extremely cold-hardy and needs cold winters to perform well.
What zone is Iowa?
Iowa spans USDA Zone 5a (4a, 4b, 5a, 5b).
When do you plant Rhubarb in Iowa?
See the planting guide for Rhubarb — timing depends on your exact frost date.