How would I fertilize with only nitrogen and phosphorus . I don ' t know , I can only go by what you posted , and you posted , I alternate in fertilizers nitrogen and phosphorus weekly . That sentence says that you alternate nitrogen and phosphorus weekly . I ' m not a mindreader , I don ' t know you or your orchidgrowing history , and there are gardening n 00 bs out there who have acquired some odd ideas regarding fertilizer . And roots are bound to pot also new ones are growing so I don ' t think removing it is a good idea . Removing an orchid from a pot is never lifethreatening to an orchid that is receiving optimal care and so can heal any breaks quickly , especially one that is so rootbound that the roots are adhered to the side of the pot . Edit to whoever It ' s kind of tacky to downvote someone for asking for clarification . And it ' s doubly tacky to downvote someone for mentioning it , too . Grow up . I ' m done here .