Soil Additives

Lambert Horticultural Perlite 8 Dry Qt

Beautiful Small Black Lava Rock looks like small/medium perlite and is much better.Please note that due to this products weight it is always shipped USPS.This small black lava rock comes with black lava rock powder in it and will add to the minerals...

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...

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...

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...

Rice hulls are now available in smaller sizes for gardeners and small growers! This natural, sustainable, and renewable alternative to peat, vermiculite, and perlite makes an impressive growing media when mixed with compost or your favorite potting soil...

The difference? Thrive.N is 15-0-0 and this product just tested at 2-10-5 which is a HUGE number to hit for organic products. We have been searching for a product that will provide available P and K in balance to the plants for years without going to...

BuildASoil brings you sulfur that you can introduce into your soil as a soil amendment. Wettable sulfur, and sulfur in general, is a tool to lower the pH levels in soil. Too much, the soil shows too much salt, and the plants suffer, so measurement and...

Gardeners have long known that there's magic in worm castings. Use to enrich potting soil with active biology and plant ready minerals or top-dress your indoor container plants to give them a boost. Castings can also be brewed into a quick compost tea by...

For Seed Starting or blending a custom potting mix. Helps loosen heavy soils and prevents compaction

Insect Frass - Black Soldier Fly Larvae - Derived locally from the digestate of black soldier fly larvae.. In all natural ecosystems (where there are no man-made chemical pesticides), insects feed on and digest vegetation, and give it right back to...