I will have to divide my orchids shortly as they are growing out of their pots. I have heard that once I divide them it will take several years before they bloom. Is this info correct? Thank you:
sometimes it is better to just repot it undivided in a bigger container to give you more blooms to enjoy...unless you want to sell the divisions to make them earn their keep
It really depends on the size of the division and the species. As long as there is enough root mass on both divisions then as Ray said they will not miss a beat. If they lack roots then it may take a year or two to bounce back, just because the plant will be using it's energy into growing and not flowering.
Personally I don't divide unless I don't have a pot big enough to pot into, or somebody wants a piece.