Soil Additives

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...

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...

Perlite, Use to improve aeration and drainage, Moisture and nutrient retention capabilities and lightweight characteristics make it an excellent sterile medium for starting seeds and rooting cuttings, Will not degrade over time, Great for starting seeds,...

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

This Recipe has been tweaked over the years and is finally where we like it. Perfect for Raised beds or Container plants. Almost 60% Clover Seed from 4 types of clover. Designed To Encourage Mycorrhizal Fungi Populations Small seeds work excellent in...

GEOLITE clay pebbles serve as a strong, durable and versatile media, perfect for hydroponics and many horticultural applications. Made from 100% natural Italian clay, this media is industrially produced at extremely high temperatures (2200F/1200C) and...

100% Pure Freeze Dried Coconut Water Powder For Your Garden! Now Even More Soluble. No Fillers or starches, just pure great tasting all natural freeze dried young coconut water powder. FREE SHIPPING + Better Pricing + Better Product = BuildASoil...

We have done thousands of soil tests and over the years and we've noticed that our particular soils are usually very high in Iron but very low in manganese and 5 other Micro-nutrients like Boron, Cobalt, Copper, Molybdenum and Zinc! Once you regain...