Hello,
One variable that controls the number of buds produced on a flower spike is temperature. These nurseries that produce these Phals with a dozen or more flower per spike keep the temp in their greenhouses to 72 degrees or slightly cooler. This keeps the spike tip growing and producing more buds. When the number of buds is enough...they raise the temp...the tip slows or stops...and the buds begin to grow much faster. I have gotten 5 more buds on a blooming spike by keeping the plant in a room that never got above 72 degrees. It works.
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