Plug Bulk Rhiza

Plug Plant Starter Rhiza is a peat-free substrate formulated specifically for early stage plant growth. Ideal for seedlings and young clones, this fine blend has a consistent structure that provides exceptional aeration and moisture retention that supports healthy, uniform rooting. The addition of beneficial rhizobacteria stimulates root development, enhances nutrient uptake, and helps plants establish quicker and stronger. Because this substrate is unbuffered, it gives you full control over your feeding schedule — with a clean organic profile that makes it perfect for both commercial and home cultivation. If you need something for high-volume propagation without the added microbes, Plug Bulk Basic delivers the same core structure. Running a smaller setup but prefer a substrate boosted with rhizobacteria? Small Rhiza is perfect for compact grows.