Looking for recommendations on when to harvest. Th...

Hello ! The best moment to chop for a peak of THC ( and potency ) is when the trichomes are mostly cloudy/white , the best time to srart the flush is when your trichomes are almost ready , if you want 90% white trichomes then flush when you see 80%. Now concerning the flush ,for soilless/hydro grow a week is the average , 10 to obtain a yellow colour ( so less chlorophyle ) but 7 days is good enough. Now concerning your plants I can say that the dark green colour is caused by a slight nitrogen excess but it can be fixed by using a bloom fertilizer with more PK than N , also the purple stems could be a sign of a magnesium deficiency but the leaves does not showing the others signs so I bet it is a genetic trait of you strain. The yellowing tips could be an over feeding sign too but also looks like a Potassium deficiency as the edge of the leaves an the tips are yellowing but I'm not sure about it. I hope ot will help you 😁👍

I feel like everyone has their own preference of what the most ideal cannabis to harvest is. I read Ed Rosenthal say that as soon as any trichromes tops swell and then begin to change from glassy, they're losing their strength and degrading into cbg etc and this is bad if you want the most psychotropic effects. Then i hear most people say that the best time is partially clear and milky for the even high. Me personally i don't mind a little degradation into amber, it seems to take the edge off and prevent me winding up with anxious stressful weed. Then there's the odd quirks of every strain being different, like i think high cbds usually finish a little early. So my best opinion is watching and waiting for the trichrome tops to swell with resin and then the window has opened, then its on us when to close the window. Congrats on the harvests, the 1st looks great, so I'm sure the others won't be any disappointment either. Happy trimming ✌️

Hi there @Kbloom! overall agree with @spinnergrow about the yellowing tips being caused by Nutrient burn. The plant with the Chlorisis(yellowing) on the leaf tips Needs to be flushed with Pure water PHed at 6.1-6.3 for 3-4 days before continue back onto a feed with reduced nutrients. In terms of Trichomes you are doing a perfect job so far watching them for the harvest time- I HIGHLY recommend aiming for as much Cloudy Trichomes as possible to give a mental head high and some Amber for a body high! Be sure to leave a full week of time before your harvesting to Flush the plants of all the leftover nutrients with pure water for a cleaner smoke! If the furthest along plant is struggling then don't be afraid to Harvest her a little early this can help maintain trichome quality on a degrading plant. Long story short you have nothing to worry about this late into flower that you can seriously change, just flush the plant for 3-4 days and return on a reduced nutrient schedule until your harvest time! 😎

Hi @kbloom! Use a hand-held magnifier/microscope and take a daily close look at the trichomes, they will tell you when to start to flush and when to harvest. Once you see the first milky trichomes you can trigger the flush phase, trichomes will take several days to turn 100% milky, usually between 8 and 12 days in coco, this will be your flush duration. Watch the color of the runoff, it should get more clean & clear each time you flush. Try to decrease your relative humidity for this last week (50% is a bit high, 30% would be better), this will encourage resin production and will prevent any mold/bud-rot issues. After each waterings make sure your containers get a cool and continuous breeze, this will help them to dry faster and avoid overwatering symptoms. Clear and skinny trichomes --> too soon, milky and fat trichomes --> best time to harvest, amber trichomes --> too late, THC is degrading. You will probably mixed trichomes, like 80% milky 10% clear 10% amber, this is still a very good ratio. Hope this will help, keep us up-to-date and enjoy your harvest 👊

hey there, for soiless grows you want to flush for a week so the name of the game is trying to time that chop just right. Basically trychomes take an average of two weeks to rippen fully, but it depends on the strain as well. The good news is critical plus is straight up in the average here. When do you harvest? trychomes are clear before they make thc, milky when they are full of thc and amber when they are oxydised aka damaged. That's why you want to aim for all milky no clear. The easiest way to time it is to wait until you see some amber and no clears. That's max potency. I dont know about you but i like the weed strong lol. So when you're around 80% milky no amber start the one week flush. based on your 50% humidity you want to chop them down around three days after the last watering so that you have the best possible conditions for the drying. For the leaves drying up, i cant really really tell because you're not disclosing the feed but I'm suspecting a combination of cal/mag deficiency (based on the purple stems) and ph fluctuations from ever so slightly irregular watering - you know how soiless is unforgiving like that right? you want to keep that PH around 5.8 and make sure the coco dont go too dry for too long. Hope this helps ! 🚀