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Can You Grow Watercress in Hawaii?
US · USDA Zone 12b · zones 9b, 10a, 10b, 11a, 11b, 12a, 12b
Watercress needs constant moisture and cool conditions — it bolts and turns bitter in heat or dryness.
Plant zones
Hawaii last frost
Hawaii first frost
Days to harvest
When to plant Watercresses in Hawaii
Direct sow
Harvest
Dates are approximate, based on Hawaii's average frost dates. Your exact yard may vary by microclimate.
About Watercress
Watercress is a peppery, nutrient-dense aquatic green that loves cool, running water and partial shade — an easy container crop if you keep it constantly wet.
Grow in a container of rich soil kept standing in water, refreshed regularly. Harvest outer leaves often. Prefers cool shade to hot sun.
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 Watercress in Hawaii?
Watercress needs constant moisture and cool conditions — it bolts and turns bitter in heat or dryness.
What zone is Hawaii?
Hawaii spans USDA Zone 12b (9b, 10a, 10b, 11a, 11b, 12a, 12b).
When do you plant Watercresses in Hawaii?
Plant Watercresses Jan 1, harvest Jan 31 – Mar 2.