Soil Additives
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PVP Industries PVP Industries® Coarse Horticultural Perlite - 4cu ft - Coarse
Used primarily in soil mixes, hydroponics and gardening. Horticultural perlite is clean, sterile, pH neutral, non-flammable, odorless, non-toxic and neither decays nor shrinks even pests such as insects and fungi can't destroy it.
$34.95
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Hoffman Hoffman Volcanic Lava Rock - 2qt - Red
Genuine Red Colorado lava rock. A great, decorative moisture retainer for potted or bedded plants.
$10.79
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Hoffman Hoffman® Horticultural Perlite - 8qt
Lightweight soil conditioner (white, powdery material) that loosens clay soil, reduces caking, and improves drainage and aeration. Can be used to start seeds, propagate cuttings, and store bulbs. Blend with peat moss and vermiculite for custom soilless mix.
$11.09
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Hoffman Hoffman® Horticultural Perlite - 18qt
Lightweight soil conditioner (white, powdery material) that loosens clay soil, reduces caking, and improves drainage and aeration. Can be used to start seeds, propagate cuttings, and store bulbs. Blend with peat moss and vermiculite for custom soilless mix.
$21.59
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Build-A-Soil Build A Soil Rice Hulls - Bale (50LB)
Studies have proven that rice hulls can efficiently replace perlite in your potting soil mixes and is much better for the environment. We have independently heavy metal tested the contents and will only work with PBH for our rice hulls because of how clean they have tested. Beware of cheap rice hulls potentially full of heavy metals. Parboiled rice hulls are produced by steaming and drying rice hulls after the milling process. This results in a lightweight and consistent product that is free of viable plant and/or rice seed Useful Info 50lb Bag = About 7 Cubic Feet Once Expanded Rice Hulls weigh about 1 lb per gallon. How To Use We recommend using around 30% aeration. If going for long term no-till we suggest using half Rice Hulls and Half Pumice or Lava Rock.
$90.00
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Build-A-Soil Build A Soil Certified Organic Straw Mulch - 1 cu ft
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 organic but comes from a local farm. There isn't a need to spray for pests and most of the local farms use chicken manure as the cheapest means to fertilize etc. There will be some foreign dried plant material as there always is with any straw bales.Looking for something that has NO seeds? Check out our Blue Oyster Mushroom Straw Logs. They are made on an organic mushroom farm and pre-sterilized before they grow mushrooms on them. Useful Info 1 Cubic Foot of straw doesn't weigh much but will easily mulch 6-12 plants depending on the depth of mulch and the size of the container. The straw is compressed when baled and we do not fluff it up before packaging. So 1 bag will hold more than you think.
$39.00
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SuperMoss SuperMoss® Orchid Potting Medium - 4qt Zip Bag
SuperMoss Orchid Bark is natural Fir tree bark. Its pH makes it an ideal potting medium for orchids. It allows for great oxygenation and drainage of water so that the orchid's roots have constant access to both water and oxygen. This mimics an orchid's natural environment and helps them grow to their full potential.
$13.49
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Hoffman Hoffman 2 Qt Western Desert Sand
Clean, washed silica sand. Excellent for formulating your own cactus soil. Mix with Garden Soil to create a loamy soil.
$9.59
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Build-A-Soil Build A Soil Charged Bio-Char 1 Cu Ft
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 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 chunks, to what you see in the picture below. Get your Bio-Char Today!Bio-Char for your soil mix.Recommended at 5% of your Organic Potting Soil mix. Excellent for No-Till.
$52.00
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Build-A-Soil Build A Soil Charged Bio-Char 2 Gallon Brown Bag
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 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 chunks, to what you see in the picture below. Get your Bio-Char Today!Bio-Char for your soil mix.Recommended at 5% of your Organic Potting Soil mix. Excellent for No-Till.
$27.00
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Hoffman Hoffman Sphagnum Peat Moss - 10 Qt
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.
$8.09
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Build-A-Soil Build A Soil - Wettable Sulfur 5LB
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 experience will be helpful.
$36.00
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Build-A-Soil Build A Soil BuildAFlower Top Dress - 1 CUFT
3 Types of Compost + Added Minerals.Top dress handfuls across soil surface before/during flowering.Increased Yield is often related to the health of the plant. To have a healthy plant, the soil must be in top shape. Many expensive flowering nutrients are based on sugars and complex carbohydrates that are a waste of money. The Build-A-Flower Top Dress kit is a well rounded and complete approach to flowering. With one top dress you effectively add all the nutrients and micro-nutrients required for a healthy soil.
$71.00
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Hoffman Hoffman Sphagnum Peat Moss 18 Qt
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.
$12.49
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Hoffman Hoffman Vermiculite - 8 QT
Soil conditioner that loosens soil, provides aeration and retains water. Can be used to start seeds, propagate cuttings and store bulbs. Blend with peat moss and perlite for custom soilless mix.
$15.19
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Hoffman Hoffman 2 CU FT Horticultural Perlite
Lightweight soil conditioner that loosens clay soil, reduces caking, and improves drainage and aeration. Can be used to start seeds, propagate cuttings and store bulbs. Blend with peat moss and vermiculite for custom soilless mix.
$39.99
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Build-A-Soil Build A Soil Worm Castings Vermicompost - 2 Gallon
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. Enjoy!We go through large volumes so you know we always have fresh castings on hand and not last years left overs.
$25.00
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SuperMoss SuperMoss Orchid Bark 8oz
This orchid bark is excellent propagation and potting media for orchids. Its ideal soil cover for indoor and outdoor container plants. Great for air plants, epiphyte orchid species that grow on branches above the rainforest floor and it provides a natural growing environment and moisture retention.
$7.29
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Hoffman Hoffman 18 QT Horticultural Vermiculite
Soil conditioner that loosens soil, provides aeration and retains water. Can be used to start seeds, propagate cuttings and store bulbs. Blend with peat moss and perlite for custom soilless mix.
$27.99
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Build-A-Soil Build A Soil Small Black Lava Rock 0.5 CUFT
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 in your soilLast longer than perlite, works like perlite, and provides minerals.Lava Rock will not shift and float to the top of your container like perlite.
$35.00
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Build-A-Soil Build A Soil Pumice - 1CUFT
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 simultaneous rapid cooling and rapid depressurization. The depressurization creates bubbles by lowering the solubility of gases (including water and CO2) that are dissolved in the lava, causing the gases to rapidly exsolve (like the bubbles of CO2 that appear when a carbonated drink is opened). The simultaneous cooling and depressurization freezes the bubbles in the matrix.  How To Use Pumice Use for potting soil at 15-40% by Volume
$52.00 $39.99
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Build-A-Soil MontanaGrow Silica Amendment 25lb
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 Blocking of Heavy Metal Uptake Alleviate Biotic Stress MontanaGrow silicon strengthens plant cells from roots to shoots, helping to repel insects. Alleviate Abiotic Stress Plants survive and thrive through frost and heat events allowing for a longer growing season. Great Organic Input Option Food grown with MontanaGrow can be certified organic, is healthier, and more nutrient dense.  MontanaGrow Volcanic Tuff Additional Benefits Revitalize Soil and Improve Plant Health Moderate pH Acts as a Buffer High Cation Exchange Capacity Increased Ability to Hold Moisture  3.5 on the MOHS Hardness Scale Chemical Free Will Not Burn Plants Does Not Run-off or Leach Reduces Nitrogen Volatility  Improves Phosphorus Availability Unique Source of Silicon Result of Ancient Pyroclastic Flow Mined from a rare deposit of silicon rich, non-crystalline volcanic tuff formed over 30 million years ago by a pyroclastic flow.   Has a rich amorphous content that contains over 76% SiO2 providing a natural source of plant available silicon (silicic acid). Porosity Unlike Any Other Silicon Source Extremely porous, weathers easily, and provides immediate and gradual release of plant available silicon.   Reacts dynamically with other minerals and nutrients to address critical soil and plant deficiencies. Amorphous, non-crystalline silicon and is not a hazardous or harmful material. Click below for safety data sheet.
$80.00
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Build-A-Soil MontanaGrow Silica Amendment 5lb
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 Blocking of Heavy Metal Uptake Alleviate Biotic Stress MontanaGrow silicon strengthens plant cells from roots to shoots, helping to repel insects. Alleviate Abiotic Stress Plants survive and thrive through frost and heat events allowing for a longer growing season. Great Organic Input Option Food grown with MontanaGrow can be certified organic, is healthier, and more nutrient dense. MontanaGrow Volcanic Tuff Additional Benefits Revitalize Soil and Improve Plant Health Moderate pH Acts as a Buffer High Cation Exchange Capacity Increased Ability to Hold Moisture 3.5 on the MOHS Hardness Scale Chemical Free Will Not Burn Plants Does Not Run-off or Leach Reduces Nitrogen Volatility  Improves Phosphorus Availability Unique Source of Silicon Result of Ancient Pyroclastic Flow Mined from a rare deposit of silicon rich, non-crystalline volcanic tuff formed over 30 million years ago by a pyroclastic flow. Has a rich amorphous content that contains over 76% SiO2 providing a natural source of plant available silicon (silicic acid). Porosity Unlike Any Other Silicon Source Extremely porous, weathers easily, and provides immediate and gradual release of plant available silicon. Reacts dynamically with other minerals and nutrients to address critical soil and plant deficiencies. Amorphous, non-crystalline silicon and is not a hazardous or harmful material. Click below for safety data sheet.
$30.00
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Build-A-Soil Build A Soil Quillaja Saponaria Extract 60 Powder 2oz
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 saponins found in Quillaja Extract Powder for your garden is an absolute game changer. This natural wetting agent makes water 'wetter' and foamy allowing for even spread. Made from the organic Quillaja (Q-Ya-Ha) Saponaria Tree, we can't speak highly enough of this plant extracted source of Saponins.
$44.00
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