Plants yellowing and deteriorating significantly at the end of bloom due to nutrient deficiencies. Do I harvest early?

Personally, I prefer to harvest when there are 95-98% brown pistils and don't place too much importance in trichome colour, some plants never develop amber trichomes anyhow, and some will have 75% amber after only 4 weeks of flowering. Once all the pistils/hairs are 100% brown, THC begins to breakdown rapidly into CBN and CBD, two non-psychoactive trichomes which causes more of a heavy/sleepy body stone, unlike flowers picked slightly earlier (95-98% brown) which produce a more mind bending head high. Let your preferred type of effect, body stone or head high, guide your harvest timing. Hope this helps, Organoman.

What’s up man. New grower as well. From my understanding red or purple stems could be a nitrogen deficiency but I think the leaves being dark purple are genetics. If everything was straightened out with nutes it could just be getting to the end and getting its “fall colors”. Hopefully that might spark some ideas. Hope all is well dude

I would start a flush and harvest in a few days to a week. Plant is fading due to likely a lock out in substrate. Cloudy has highest thc. Amber is more couch lock. Looks good, enjoy the harvest. 🌱🌱👍