Soil Additives

Lambert Horticultural Wood Charcoal filtration properties aid a media by purifying air and water. It is also used at the bottom of containers to aid in drainage of excessive water. Charcoal is also used with other substrates in the cultivation of certain...

Lightweight soil conditioner that loosens clay soil, reduces caking, and improves drainage and aeration. Can be used to start seeds, propagate cuttings and store bulbs. Blend with peat moss and vermiculite for custom soilless mix.

Lightweight soil conditioner that loosens clay soil, reduces caking, and improves drainage and aeration. Can be used to start seeds, propagate cuttings and store bulbs. Blend with peat moss and vermiculite for custom soilless mix.

AG Limestone is an agent added to soil to help raise the pH without adding trace amounts of magnesium like Dolomite Lime.This Limestone contains 4% magnesium compared to Dolomite which is approximately 14% magnesium. Ag Lime contains aragonite which is...

BuildASoil Worm Castings are simply the best bulk source of castings we have ever had the pleasure of working with, we often find living worms still inside the castings.Ôªø This stuff is wet and moist and will often have live worms and cocoons inside...

This orchid bark is excellent propagation and potting media for orchids. Its ideal soil cover for indoor and outdoor container plants. Great for air plants, epiphyte orchid species that grow on branches above the rainforest floor and it provides a...

Soil conditioner that loosens soil, provides aeration and retains water. Can be used to start seeds, propagate cuttings and store bulbs. Blend with peat moss and perlite for custom soilless mix.

Produced locally in Harvard, MA One gallon of Best Buds coarsely sifted worm castings. Used by growers during from seed through the growing season to promote healthy plants. Best Buds worm castings & compost tea is produced by our "best...

Lambert Horticultural Perlite 8 Dry Qt

BuildASoil Craft Blend started with a big workshop full of the best and cleanest soil amendments available. I quickly became spoiled and would use all of the BuildASoil ingredients together and in different combinations that aren't available here online...

Oyster Shell Flour is a high quality soil conditioner which consists of 96% calcium carbonate and many micronutrients, Oyster Shell Flour provides a long-lasting, steady release of nutrients to help regulate pH levels, improve fertilizer uptake, promote...