Soil Additives

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...

WHITTEMORE Perlite Supercoarse 4 CF

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...

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...

MontanaGrow is 76% amorphous silicon proven to increase: Plant Cell Wall Strength Photosynthesis Disease Resistance Flood Tolerance Nutrient Balance UV Tolerance Carbon Sequestration Drought and Salt Tolerance High & Low Temperature Tolerance...

This luxurious Probiotic Soil Inoculant yields an ample, diverse living soil. We incorporate 5e9, Aloe, Kelp Meal, Aragonite, Fertoz, Montmorillonite Clay, Azomite, Molasses and a Humic and Fulvic acid with Organic wheat bran and ferment it for two weeks...

 Our Elite Worm Castings, made from organic materials, are the perfect soil amendment to naturally increase your plants' nutrition and vigor. Utilizing these castings will help give your plants an extra boost. Experience the power of organic...

 This potent blend of living microorganisms serves as an unparalleled soil and plant inoculant. Boasting a CFU count of 5 billion on each bacteria listed, it has the highest concentration currently available.  Its diverse strain of bacteria...

 This flowering mix is loaded with the nutrients and minerals needed for robust flower growth.   This mix is made from 10 certified organic amendments and is sprinkled onto the soil when your plant starts transitioning to the bloom...

 This formulation is distinctively our own, a blend of Organic Soil Amendments that has been rigorously tested and certified to supply optimal nutrients and minerals to guarantee successful cultivation of a plant, provided sufficient soil volume is...

 Looking for mulch but don't have a farm in your backyard?We have access to an abundance of straw and are happy to ship you some for your small garden. Larger gardens will benefit from sourcing locally. This barley straw is not certified...

Would you like a single source of seed that is slow growing and establishes excellent cover? This cover crop is perfect for containers and we really are excited to offer it.  This seed is sprouting quality and very clean, when you compare to the...