Why use Cypress for Beehives ?Pine, cedar, poplar and cypress are common woods used for bee hives. All woods have positives and negatives, especially when used for beekeeping equipment. In Georgia, Mississippi, Alabama and Louisiana, cypress and pine are both popular woods.
Pine is popular because it is inexpensive, grows quickly and is easy to cut. Cypress is popular as it grows slowly in wet areas, creating a denser wood with tight growth rings. The tight rings and naturally present preservative cypressene minimizes decay, allowing cypress bee hives to last longer than any beekeeper does.
http://www.foxhoundbeecompany.com/beekeepingblog/2015/12/6/cypress-vs-pine-wood-for-bee-hives