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Can You Grow Rhubarb in Idaho?
US · USDA Zone 6b · zones 3b, 4a, 4b, 5a, 5b, 6a, 6b
Rhubarb thrives here — it is extremely cold-hardy and needs cold winters to perform well.
Plant zones
Idaho last frost
Idaho 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 Idaho
Idaho has a semi-arid continental climate. Southern valleys are Zone 6-7 with hot dry summers; northern regions and mountains are colder. Excellent for root vegetables and cool crops.
Frequently asked questions
Can you grow Rhubarb in Idaho?
Rhubarb thrives here — it is extremely cold-hardy and needs cold winters to perform well.
What zone is Idaho?
Idaho spans USDA Zone 6b (3b, 4a, 4b, 5a, 5b, 6a, 6b).
When do you plant Rhubarb in Idaho?
See the planting guide for Rhubarb — timing depends on your exact frost date.