How many plants do you have?

Usually if you have more than 8 plants and you are using a 1000 watt hps for flowering you want consider flowering when the plants reach 8-24 inches.. depending on how many plants you have..

8 plants, you could let them get as big as 20 inches before flowering...
16+ plants, and you want to flower when they are 8-12 inches tall..


Alhoa
Garden Knowm Reviewed by Garden Knowm on . Vegetative to Flowering Question. Aloha, Thanks to all who take the time to reply to my post. I have several plants under a 1000-watt metal halide bulb running 18 hours being fed 6 gallons of water with (15-30-15) every other day. They have been on this schedule for approximately 8-9 weeks. At this time they are all between 24" and 36" tall. I would like some advice on when to switch to my 1000 watt HPS bulb and 12 hour cycle also any advice on when to switch to (0-13-0) fertilizer and any other words of wisdom would be Rating: 5