|My phalaenopsis orchid grows new tubers but won't grow a stem or a bloom.|
|Orchids are an incredibly independent lot! But they are lovers of humidity and I find they won't flower without it. Have you tried setting the pot on top of pebbles with a shallow layer of water? As the water evaporates, it increases humidity around the plants. Don't let the pot/roots sit in the water, but just above it. Light daily misting can also help. |
Also, since orchids are generally planted in something like bark, they need to be fertilized regularly for nutrients. My friend who has a greenhouse full of orchids recommends fertilizing with a balanced fertilizer each time you water, but use only 1/4 of the amount of fertilizer recommended on the container. Try to be patient. If the plant looks healthy, it will probably bloom again in time! Also, phalenopsis can bloom for a couple of months or more once they start! Good luck.