Largemouth bass usually spawn between mid-April and mid-June. Nests are constructed by the male in 1 to 6 feet of water. The female lays between 2,000 and 20,000 eggs in several different nests; one nest can contain eggs from several females. The male guards the eggs until they have hatched.
im not actualy the one who wrote this, i just found it the other day and i remembered so here it is,
im sure the spawn also dependes on how warm the water is as well though