ks Stunger. I've been just drizzling maybe a liter of water over the top of the soil once a week for the last month. Evaporation is now slowed, so less water needed. But I've not done any droughting. Even without droughting, the low humidity of the ambient air, at around 30-35% RH, seems to accelerate trichome growth.
So I am going out on a limb in the dark here, botanically speaking. It seems there are two plant responses. Droughting in late flowering produces a plant that is repeatedly wilted for lack of water. The droughting itself also produces an environment of low humidity. This is said to result in greater potency. But which is it -- the droughting or the low humidity -- that would produce that result? If low humidity applied without droughting also enhances potency, then growers would not need to subject the plants to the stress of wilting.
It might be worth while to make a test with low humidity alone, giving enough water in late flowering but keeping RH low, at 30%. The plant's increased trichome response might be owing to just the dry air, not the lack of water in the soil. It's worth an experiment, and maybe someone with an indoor setup would like to try it. Just saying. Here a few links:
Is it possible to obtain more resin from cannabis plants? And what about cannabinoids and terpenes? Can you also boost their production? In this article we answer all these questions and give you a few simple tricks to achieve higher yields in terms of trichomes quantity and quality.
www.alchimiaweb.com
IME, Low Humidity, Low Temperature flowering environments, for cannabis, produce higher trichome density. I've been able to find a few pieces of information pointing in that direction as well. The difficulty is in finding studies done with high VPD, low humidity environments. The only one I...
www.icmag.com
I was just reviewing GWE's article about trichomes. I'm at the end of this grow but like to arm myself with knowledge for the next one. My temps are mid-upper 70's and the natural humidity hovers <40%. I'm pretty pleased with what I have but would never turn down MORE/BIGGER trichomes!
forum.growweedeasy.com
Make Your Buds Sparkle With More Trichomes | Grow Weed Easy
2.) Environment: Alter Temperature & Humidity Near Harvest (Advanced)
The main thing to remember when it comes to altering your grow environment for the last 2-3 weeks before harvest is this:
- Humidity below 30% – Drop the humidity of the grow space below 30% RH for last 2-3 weeks before harvest to increase trichome production
- Temperature between 70-80°F – Make sure your temperature stays under 80°F (26°C) to ensure potency is not being baked right off your buds.
There are a couple of ways to lower the humidity while maintaining the right temperature:
- Dehumidifier – brings humidity down while giving off heat and increasing temperature; the more powerful the better
- Air Conditioner – brings humidity down while cooling the air
In extreme cases, I’ve heard of growers using both an AC and a dehumidifier at the same time to maintain that perfect temperature while dropping the humidity very low.