Ok-- you can not "time" your grow that way.. especially if you want to max the yield..
#1-- they need to be MATURE to flower-- usually 5-7 weeks... often longer for sativas.. You CAN and SHOULD go 12/12 sooner if you need them to start to bloom ASAP-- but they WILL NOT bloom until THEY are chemically mature enough to do so.
#2-- once in 12/12-- they can take from several days to several WEEKS to start to bloom-- Bloom -to-harvest countdown doesn't start until small clusters of at least 3-4 calyx's start to appear.
#3-- Once they start to bloom, count the EXPECTED days to harvest (according to the breeder info) then start checking the crystals ahead of time... Use the link below for harvest info...
#4-- most important- to yield well, spend time with your plants so you KNOW when something "isn't right" so you can fix any problems asap... and always use LOT'S of the right lighting & correct nuts in the right amounts...
the links below will help ya!
NUTES and FEEDING CHART: nutes-what-to-use-and-how-to-use-em-t14033.html
GUIDE TO GROWING step-by-step-growing-faq-s-please-read-before-posting-t20217.html
Trimming Plants for better health & bigger harvest:
Harvesting, drying & curing
Harvest times by FruityBudz
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