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Can You Grow Rhubarb in Hawaii?
US · USDA Zone 12b · zones 9b, 10a, 10b, 11a, 11b, 12a, 12b
Rhubarb needs cold winters to break dormancy and struggles in warm climates.
Plant zones
Hawaii last frost
Hawaii 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 Hawaii
Hawaii is tropical with year-round warmth. Zone varies dramatically by elevation — coastal areas are Zone 11-12 while Mauna Kea slopes reach Zone 9. Year-round growing throughout.
Frequently asked questions
Can you grow Rhubarb in Hawaii?
Rhubarb needs cold winters to break dormancy and struggles in warm climates.
What zone is Hawaii?
Hawaii spans USDA Zone 12b (9b, 10a, 10b, 11a, 11b, 12a, 12b).
When do you plant Rhubarb in Hawaii?
See the planting guide for Rhubarb — timing depends on your exact frost date.