Autoflowers are best grown in soil with a PH of at least six. This is because autoflowers have higher water needs and will develop best when their roots are not exposed to the air. So, keep reading.
· Cocoa husks: often used as a substitute for peat moss or vermiculite because they provide good aeration and drainage properties.· Perlite: It helps increasing aeration and drainage when mixed with potting soil mixes.
· Sand: Not technically considered “soil” either since sand doesn’t contain much organic matter.· Soil mixes: These mixes usually contain a combination of peat moss, vermiculite, and perlite (or sand), along with other ingredients like composted manure or worm castings.