espoma bio tone

Guaranteed N-P-K ratios reported include 3-4-4, 4-3-4, 4-3-2, and 4-3-3.

Reported application methods include sprinkling the product around the plant base, applying by hand, and using some formulas that are ready-to-use with no mixing required.

Products are enhanced with beneficial microbes (referred to as Bio-tone microbes); some formulas explicitly list mycorrhizae and humates.

Pack sizes shown include 4 lb, 8 lb, and an 18 lb option.

Listings claim faster plant establishment, deeper and stronger root systems, and encouragement of larger blooms and more robust growth.

Additional ingredients reported include humates, beneficial microbes (Bio-tone microbes), mycorrhizae, and—in the Holly formula—5% elemental sulfur to acidify soil; listings also state no fillers or sludges are used.