Question
I have a phaleonopsis that I've had about two years.  It's quite large, probably two plants.  It blooms and blooms and blooms.  Lower leaves are shriveling.  I think it needs to be repotted, but should I do it when it's blooming?

Answer
Ann, it is likely that this plant needs to be repotted.  I would not let a plant be in continuous flower more than 6 months so use that as a rule of thumb. Preferably repot when it is donw flowering.  If it is still in flower after 6 motns, cut off the flower spikes,remove the plant from its pot and examine the roots for any root rot.  Then repot in a fresh orchid potting mix and replace in the same location it likes so well.