[header] How to grow water chestnuts [title] Find a large container to house your water chestnuts. [step] Purchase a large drum or plastic tub to house your water chestnuts. A 100 liter (26 us gal) container will yield 30-35 mature water chestnuts. 
If you want to grow more chestnuts, use a larger container. [title] Fill the container with an organic potting mix.