So, I am using a trichome microscope and using trics to tell how close my plant is to harvest. I understand how to tell when the plant is finished, but is there something specific I can look for to know when I should stop nutrients for the final 2 weeks? Just looking for a relation of trichome development to knowing when you're in the final 2 weeks of growth. Thanks for any info.
Depends the strain. On sativas that keep spitting out pistils... I wait for third wave of pistils, probably about 40% past that... looking for ~60% pistils -> orange; some people look for the start of trichome color changes (which may not happen), and some just stick to a tried and true time schedule. I grow a lot of different strains, kinda just tell when its almost done. I don't grow in dirt, so my flushes are from 3-7 days depending if I'm in hydro or coco. Going to start flushing one tomorrow in fact.
best way is to look up the strain you are growing and do a search online for others that have grown the strain; if you can't find the strain, try lookin up its parents and see how those are suppose to look/how long they take.
Ok, so I want to wait for roughly 60% of the hairs to change color and the third pistol group... now do I wait for both or can it be one or the other?
It is a fruit punch autoflower from heavyweight seeds. It got planted with 3 photos (white widow, blue dream, and white widow big bud) because it was a freebie and wasn't labeled. It's about 2.5 weeks ahead of the photos.
Says ~75 days, I'd start flushing at ~65 (in soil) Here's the information (linked). Can be tricky at first figuring out when, its just a matter of experience mostly... with that particular strain. I don't think it will matter too much missing it by a week... as in a week too late. Relatively the same amount of THC remains (from the available scientific literature).
and given you have a scope, use it and record the findings! Let others' know what they look like prior to and at harvest. This is the kind of information that could open up a database/website!
Thanks for the info. This was exactly what I was looking for, and will definitely begin recording and sharing my findings with each of the strains I have and any future strains. I do have a grow journal going named white widowXbig bud grow because initially it was suppose to be 4 wwXbb plants but ran into complications early because I didn't have the time to properly care for them.
Shes ready imo.. this is off a bottom popcorn b.s bud i pulled off to sample being my wife threw my scope out so i cant check trichs.. but got a new scope an hd scope that is going to take some getting used to.. but heres the pics.. If a bottom b.s looks this ready i can imagine the rest of the plant.. will check top cola when lights come on to be sure tho.. so far i see alot of amber happening here!! But heres the pics with the new scope!!
Heres the pic of a too cola off my Pineapple Chunk Clone.. i might take her down later depending on how my energy level is.. but she can stay another day or 2 All cloudy very lil amber.. enough for a couch-lock so harvest time any minute/day now!!