It wont stop growing taller just because its flowering.
As far as i know, from when flowering starts the plant can grow another 2/3 in height.
Im not saying its a fact, but when grown hydroponically my crop did just that.
Flowering started at 15" tall, and at harvest they averaged 45" tall.

Just thought you might be interested if you were assuming it wouldnt get taller..

:thumbsup: