Quote Originally Posted by Charbud
Got my canna pk13/14 today, feeling it may a bit too late for her to really use it to her pull potential.
The food schedule I work to and all the others in the book it is from, start PK at week 5. The lenght of use depends on how long you flower and medium. But for a 9 week flower you add it weeks 5,6 and 7. Basically start at week 5 and stop the PK 2 weeks from harvest.