I wash my harvest before drying (both indoor and outdoor). It does not hurt the trichomes, and I believe it results in better tasting smoke. Once you try it and see how dirty the wash water is, you will not want to be smoking that dirt. I wash in diluted hydrogen peroxide solution with one drop of dish detergent. Most people recommend 8 ounces of H2O2 per 5 gallons of water; someone else can translate that into liters
I harvested one plant of The White first week of September, this was a clone started in April. This is an outdoor grow with wind blown dirt, bird poop, bug poop, garden splash, and other environmental impurities.
The cuttings.
My wash line. From left to right: a box of cuttings, wash bin with 10 gallons of pH 6.0 water, 16 ounces of H2O2, and one drop of dish detergent, Then a rinse bin, and finally an empty bin for the wet washed buds.
I weight down the buds with metal grill pans (clean but ugly) because buds want to float. I want the buds submerged in “disinfecting” solution for 6 to 8 minutes.
When time is up, or I become impatient, I remove the weights, use one hand to clear a corner of floating buds while I grab the stems of other buds and dunk a couple times to agitate, let it drip for a second, then throw into the rinse bin. I dunk each bud a couple times in the rinse, let drip, then place in the final bin ready for drying.
Dirty water; you don’t want to smoke this crap.
Drying branches on a line and small buds in a hanger. These start out very wet, but after a day they are about the same moisture content as unwashed buds. That’s a Gorilla Glue starting to flower in the background.