How to get mushrooms in Schedule 1

After months of doing my best Walter White impression in Schedule 1, I can finally expand my illicit substance empire with less combustible products. Compared to growing the best Schedule 1 weed mixes, shrooms feel awfully needy. The trippy toadstools won't turn the highest profit, but you'll need a small supply to keep the update's newer customers happy.

I've been working on my own mushroom kingdom since the update's beta build, so if you need help getting started, I've got the breakdown on how to grow shrooms in Schedule 1 below...