Our preferred soil formula, Pro-Mix® HP Mycorrhizae™, gets your seeds off to a great start. This peat-based mix is ideal for seed starts, root cuttings, and transplants. Pro-Mix® HP Mycorrhizae™ boosts plant performance with proper aeration, optimal drainage, and root system support.
Contains Canadian sphagnum peat moss (65–75%/volume), horticultural-grade perlite, dolomitic and calcitic limestone (pH adjuster), wetting agent and mycorrhizae – endomycorrhizal fungi (glomus intraradices).
Technical data sheet