Soil Additives

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...

If you're looking to mix soil you will need a Nutrient Kit and a Mineral Kit.Get both and save with our Complete Soil Building Kit.If you're looking for Nutrients see our Nutrient Kit For Sphagnum Peat Moss Base - ClackamasCoots Style. We separate...

Our Pre-Charged Char is soaked in a mixture of Ferti Nitro soy aminos at a rate of 1/2lb per yard and rootwise microbe complete at 1oz per yard.Bio Char varies in size based on what is available due to high demand.Sizes vary from fine, small...

Living Organic Soil with Malibu Compost There is Approximately 7.5 Gallons of organic soil in each Cubic Foot Bag. BuildASoil’s Original Recipe with Biodynamic Malibu Compost! This water only mix was based on the famous Clackamas Coots...

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...

3 Times more available than standard Calcium phosphate due to it's fine micronization.BuildASoil Calcium Phosphate is a natural mined mineral used for soil building. It can be applied dry or in a liquid suspension to the soil.For best...

If you're looking to mix your own soil you will need a Nutrient Kit and a Mineral Kit.Save Money and Get both together in our Complete Soil Building Kit. If you're looking for minerals see our Mineral Mix for Peat Moss. We separate the two so that the...

If you're looking to mix your own soil you will need a Nutrient Kit and a Mineral Kit.Save Money and Get both together in our Complete Soil Building Kit. If you're looking for minerals see our Mineral Mix for Peat Moss. We separate the two so that the...

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...

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...

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...

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...