Viewing post #2025915 by Newen7

BigBill said:The vast majority of Phalaenopsis will bloom without any kind of incentive. You just grow them and they bloom every year.
There are 2 reasons that they do not bloom.
#1 too much fertilizer. A small percentage of Phalaenopsis do not bloom if they get fertilizer too often. Some people say you should fertilize them with every watering. Also known as the weakly weekly fertilizer program. With fertilizer being applied to often and too strongly, this is what could happen, a lot of leaves but no flowers. From what little information you provided, this is what I suspect is your problem.
How often do you fertilize. How much do you fertilize? What kind of fertilizer do you use? 20-20-20?
#2 Lastly and also not that common, there are some Phalaenopsis that need a night time temperature drop of AT LEAST 15 degrees or they won't flower. This doesn't happen that often but it does happen!
This temperature drop is required due to species/hybrid background. If you grow it in a narrow temperature range of between 68 and 75 degrees all year round, they may not flower. Make sure that yours is getting a decent night time temperature drop.
Naturally this is far more common with indoor Phalaenopsis growers!! It usually can be a drop for a three week period in the fall sometime. Say mid September through late October.

It could be both...

I grow it indoor (temperature in the house is between 64-70 degrees all year round)

I fertilize with an 'Orchid liquid plant food 15-5-5' one drop with about 250 ml of water every 2 week (it said on the package using 7 drops per liter of water every time you water)