Soil Additives

Last Longer Than Perlite & Has More Minerals 3/8" x 1/4" Pumice is perfect for potting soil.Pumice is created when super-heated, highly pressurized rock is violently ejected from a volcano. The unusual foamy configuration of pumice happens because of...

Speak your plant's language! BuildASoil proudly welcomes the famous Jay Plantspeaker to our LEGEND SERIES to help you communicate with your plants in a truly meaningful way. Maybe your plants won't speak back, but they will show you they are happy. Using...

Premium grade of coarse Canadian sphagnum peat moss. When mixed with soil, increases the soil's capacity to hold water and nutrients. Can be blended with perlite and vermiculite when custom soilless potting mix is desired.

WHITTEMORE Perlite Supercoarse 4 CF

GAIA GREEN Worm Castings are the unprocessed manure of earthworms. This all-purpose fertilizer is high in organic matter, and adds essential nutrients to the soil to encourage strong plant growth. Apply as a top dressing, side dressing, or work into soil...

The reason we offer this rice bran, is because its an excellent nutrient for making your own fermented fertilizer called Bokashi. Besides this rice bran, you will also need molasses, water, and EM-1. ÔªøFREE SHIPPING on select Organic Rice Bran!A...

You asked for it, and we Mixed them up!Slow Release Nitrogen, Aerates, Nourishes, Promotes Plant Growth Resistance, Improves Soil Quality. Excellent for Vegan Organic Gardening.We Order Pallets of Neem Cake and Karanja Cake and provide a value by...

 There is a HUGE Kelp shortage this year and we have stocked up on premium organic kelp meal to make sure we don't run out this season. If you have any questions just let us know. Hawaii and Alaska customers only: The 25 lb Food Grade...

  Western Colorado Is Losing Thousands Of Beautiful Trees To BeetlesBuildASoil is now turning that wasted wood into a Glorious Soil Amendment.Weight is approximate because we pack by volume.  Available Raw or Pre-ChargedOur...

 BuildASoil's Favorite Mustard Seed Meal Fertilizer is approved for organic production. Our fertilizer is rich in natural plant nutrients and amino acids. Its formulation is 100% plant-derived allowing for a unique organic composition that...

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...