Kelpak: Weakly, Weekly?
 

Ray recommends using Kelpak no more than once a month for established plants, but has anyone ever experimented with using it more frequently?

Welcome to the Orchid Board!

Most stimulant hormones in organisms - plants, animals - are better applied at fairly long intervals. Keeping the systems stimulated much of the time often leads to unusual growth issues. I don't recall the details, but people have described Phal. flowers developing abnormally when stimulant hormones are applied too frequently.

The producer states "not more than every two weeks".

There is a post somewhere about this that you might be able to find via search option. The OP was K-Sci. He had purposely OD'd a C. intermedia with a result of severe stunting of the new growth.