Considering this is an organic forum, I'm curious about some of the comments:
Why would anyone flush an organic soil when the intent is to build and feed a designed, living soil, normally using AACT teas? Sounds like a carryover from hydro growing to flush salt buildup from chemical nutrients. Just curious.
I am a first time grower growing outside in soil but an experienced gardener otherwise. It is my experience that plants grown slowly and naturally in living microbial (organic) soil yield better tasting fruits and vegetables. I will find out if this also applies to MJ.
With good organic soil, one usually doesn't have to add any other nutes throughout a growing period unless the plant is overwatered.
For this first grow, I used a sativa clone from a dispensary, and 2 indica clones from an inexperienced grower (growing for 8 months).
I mixed EarthGro steer manure (1 cu ft from Walmart for $1.28), a bag of the cheapest potting soil to increase aeration ($1.89 from Walmart), a little compost, a little urea (pee), and mixed it in with garden soil. The plants get about 3.5 hours of direct sun and the remainder of indirect daylight. In my Colorado dry climate, I watered every 3rd day.
Here is a pic of the sativa. The canopy is about 40in x 40 in. It is healthy without any pest or nute problems whatsoever. That is a foot ruler for scale.
https://www.420magazine.com/gallery/data/500/Haze_Canopy_-_3x3sq.JPG
I did learn quite a bit about organic nutrient brands and soil from all the posts. I am getting ready to try my hand at cloning using Pro-Mix recommended by a garden supply store and will transplant these if successful to pots using the soil mix above but adding some blood meal.