Black Swallow Pumice Stone (3/8" X #8-21) is a high-quality, volcanic, porous stone that improves soil structure by enhancing aeration and moisture retention. This horticultural-grade pumice is sou...
Black Swallow Sulfate of Potash (0-0-50) is a high-quality, water-soluble, ultra-fine potash mineral that provides essential potassium and sulfur to your plants. Containing 51% soluble potash and 1...
Black Swallow ThermX-15 Yucca Powder is a powerful, organic wetting agent derived from the Yucca Schidigera plant, known for its high saponin content. This natural compound reduces water stress in ...
Black Swallow ZumSil Silica Monosilicic Acid (240ml) provides plants with the most bioavailable form of silicon—monosilicic acid—enhancing nutrient uptake and plant health. Silicon is the second mo...
Black Swallow Wollastonite Rock Dust is a high-quality, calcium silicate rock dust sourced from a high-grade deposit near Seeleys Bay in Ontario. Rich in silica (27%), calcium (16.5%), and magnesiu...
