A premium mix for indoor growing, Sunshine® Mix #4 with Mycorrhizae contains a higher amount of
horticultural perlite for plants that prefer greater air porosity. Its our classic #4 boosted with endomycorrhizae. This product contains RESiLIENCE®, which may improve resistance to wilting. Low phosphorus fertilizer has been included to better support mycorrhizae establishment and growth. Start your own feeding program within 14 days of planting or seedling emergence.