Most cypress trees are natives of the South and grow in a 13-state growing region in the Atlantic and Gulf Coastal Plains from Delaware to Texas, as well as in the Mississippi Valley from the Louisiana Delta to Southern Indiana.
Cypress tree roots love water. Some trees growing in these areas develop “knees” or pneumatophores. The knee-like growths come from the roots, helping to support the tree and also to help aerate the waterlogged root system. The wood from the knees is soft and light, and can be used to make vases and novelty items.