Catalpa Plant. It only takes one healthy seed to grow a catalpa tree. Sprout catalpa seeds about 8 to 12 weeks before planting season and grow in.
Catalpa trees are 40 to 70 feet (12 to 21.5 m.) tall trees with arching canopies and an average lifespan of 60 years. The genus catalpa is in the family bignoniaceae in the major group angiosperms (flowering plants). Though its tendency to spring up in odd places and grow rather quickly has earned it a reputation of being a bit of a weed tree, plenty.
