The plant produces trichs as a self defense mechanism. Three things I know of that will increase trich production are;
1. Bugs
2. UV light
3. Certain enzymes that stress the plant in specific ways.
Spider Farmer has come out with UV LEDs.
DaKine company has a product called "Sticky Icky" that is made of the enzymes specifically for this.
Spider Farmer UV & IR combo fills in the spectrum gaps left by standard full-spectrum grow lights. UV increases resin production and plant immunity, while IR stimulates flowering and stem growth. A powerful supplement for serious growers.
www.spider-farmer.com
Sticky Icky
Sticky Icky supplements your soil’s naturally produced enzymes, to give you a shortcut and a boost to radical oil and resin production.—including enzymes that “stress” your plants, sending them into oil-producing hyperdrive. This doesn’t hurt the plant...or your pocketbook, for that matter!
dakine420.com