Xtreme Gardening/RTI Feeding Schedule

About Xtreme Gardening

Xtreme Gardening (RTI) is a biologicals company. Mykos is the mycorrhizal inoculant it is famous for — a granular product you put in the hole at transplant — and Azos is the nitrogen-fixing rooting bacteria that goes with it. Between them they cover the two things a root zone benefits most from having early.

Nothing here replaces a base feed. These are inoculants: get them in contact with the roots at transplant or at cloning, keep the medium alive, and they do their work for the rest of the cycle. Calcium Carbonate and Gravity round out the range.

The feed chart

Xtreme Gardening feed chart

What we stock

Mykos granular and Mykos Wettable Powder, Azos, and the rest of the range in retail and bulk sizes.

© 2026 Matt’s Hydroponics, Powered by Shopify