When these are in active growth, they need LOTS of water.. Fred Clarke of Sunset Valley Orchids says "Water like a monsoon!" They are also growing very rapidly and so need extra fertilizer. (Most orchids grow slowly, and so need very little... these are very different, they grow so fast that you can almost watch them grow... they grow more like a tomato than an orchid, and so need to be fertilized accordingly because they are building vast amounts of new tissue rapidly). Since I have a large collection, can't give each plant a lot of individual attention, I supplement my "normal" fertilizing that everybody gets with a top dressing of a time-release fertilizer (examples Osmocote, Nutricote, Dynamite) for an extra boost. I apply that in the spring, it lasts 6-9 months, which is perfect -at the time that the time-release stuff is spent, it's time to slow down.
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