GF-Z
Active member
If you want to try PK boosters you can add them for a week, 3 weeks before harvest.
For most strains that means feeding them at flowering wk 5 or 6
I always use it and feel i get a much better yield with it. I really notice an increased rate of calyx/pistil formation a week after use. Aren't P and K primary required nutrients essential in flowering?
More of a forum myth is calmag surely
Potassium is definately required, but phosphorous is mainly required for seed production. Prof. Bruce Bugbee has videos on YT explaining it in details. Phosphorus is necessery but not in amounts most growers put it into. Plant usually stores it and then forces upwards when flowering stage ir reached, to produce strong and healthy seeds which would survive.
Thaths when Ive bought some hemp seed meal protein, Ive found it has P amounts of almost 500% daily requirements for human consumption.
So this proves the fact that indeed plant store P in the seeds.