How to Grow Water Chestnuts
Instruction & Advice for Growing Water Chestnut Plants
in Your Water Garden
Water Chestnuts are a root vegetable. Unlike their name, they have no relationship to the common chestnut. Water chestnuts are a perennial that grow and purify the water in swampy garden settings or shallow ponds. The edible corms grow underwater attached to rhizomes.
Water chestnuts are very hardy and require little care.
Nutrition Information: (back to top)
Under optimal growing conditions, water chestnuts offer: Dietary Fiber, Potassium, Chromium, Manganese
Climate & Growing Conditions: (back to top)
Water chestnuts grow best in gardening climates with long hot summers. They grow in shallow ponds and are not generally affected by weather extremes.
How to Plant Water Chestnuts: (back to top)
Water Chestnuts can be planted in any shallow fresh water environment. Plant the corms in the spring, after the last frost has passed. (Be sure to store your planting corms in water, or they'll quickly lose their germinating power.)
Planting the corms can be a little tricky, but a fun adventure! Your goal in planting water chestnut corms is to insert the corm in the (underwater) soil, heaping soil around it as best as you’re able. If you're having trouble, try using small stones to hold the corm and soil in place. Make sure the corm is covered by a minimum of 4” of dirt and no less than 1” of water. The pH of the soil should be around 7.0.
Gardening Challenges: (back to top)
Water chestnuts are not prone to plant diseases or problems. The only requirement is that you ensure that they're always covered by at least 1" of water.
How to Harvest Water Chestnuts: (back to top)
Allow a minimum of a 6 month growing season for this vegetable. At the end of the season, the stem turns brown and dies back. It's common to harvest during the late fall, for best flavor and the most nutrients. You can harvest in the spring, but since the plant is coming out of dormancy and using it's stores to prepare for growth, you may notice a difference in the crop flavor/texture.
Storage: (back to top)
How to freeze Water Chestnuts
Bring water chestnuts to a boil. Drain and peel off shells. Pack water chestnuts in freezer bags, remove air, seal and label. Freeze for up to 6 months.
Gardening Advice Tips (back to top)
Have a helpful gardening tip (or even a fun story) to share about your water chestnut growing experience? Share it with us at: gardeningtips@howtogardenadvice.com
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