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Home Browse Organic Growers Supply Index
20 Mule Team Borax Solubor DF
Soil Amendment
20 Mule Team Borax Solubor DF
8219 (Sodium Tetraborate, 20.5% B) Soluble borate for fluid fertilizers and nutrient sprays. Boron is essential for all stages of tree growth and fruit... read more
Azomite, Coarse
Soil Amendment
Azomite, Coarse
8213 (0-0-0.2, 5% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals.

A mix of

... read more
Azomite, Micronized
Soil Amendment
Azomite, Micronized
8216 (0-0-0.2, 5% Ca) Named for its A-to-Z of Minerals including Trace Elements; contains over 67 minerals beneficial to plants and animals, including... read more
Biochar
Soil Amendment
Biochar
8347 Join the carbon-farming revolution. Biochar is the result of heating organic matter in a low-oxygen environment; instead of releasing the carbon... read more
Bone Char
Soil Amendment
Bone Char
8283 (0-16-0, 32% P2O5, approx. 30% Ca) Burned bone meal provides large amounts of readily available phosphorus. May be applied without restrictions to... read more
BrixBlend Basalt
Soil Amendment
BrixBlend Basalt
8222 (49.3% SiO2, 13.3% Al2O3, 9.2% CaO, 5.7% MgO, plus trace minerals) A paramagnetic stone powder from the Pioneer Valley of Massachusetts for... read more
Calphos
Soil Amendment
Calphos
8225 (0-3-0, 20% Total P, 20% Ca, trace minerals) This soft-rock phosphate is an excellent choice for calcium-deficient soils as plants will take up... read more
Earthgreen Menefee Humate®
Soil Amendment
Earthgreen Menefee Humate®
8243 Hundreds of millions of years ago the lush rainforests and tropical swamplands of Precambrian New Mexico produced plant matter that, through... read more
Essential® Plus 1-0-1
Soil Amendment
Essential® Plus 1-0-1
8190 A high-powered organic blend of kelp concentrate, fish hydrolysate, potassium humate and yucca, designed to stimulate root-hair growth for... read more
Granite Meal
Soil Amendment
Granite Meal
8231 Contains about 5% potassium in very slow-release form. Plants need potassium for sugar and starch production. Granite meal can be added to the... read more
Greensand
Soil Amendment
Greensand
8234 (49.3% SiO2, 3.72% Fe) “Greensand has been successfully used for soilbuilding for more than 100 years,” according to Rodale’s Encyclopedia of... read more
Gypsum, pelletized
Soil Amendment
Gypsum, pelletized
8204 (Calcium Sulfate CaSO4•2H2O, 23% Ca, 17% S) Gypsum is a good source of calcium when the pH is already at a desired level. The sulfur in gypsum... read more
K-Mag Granular Trio® SOP-MG
Soil Amendment
K-Mag Granular Trio® SOP-MG
8237 (22%K2O, 10.8% Mg, 22% S) (Sulfate of Potash Magnesium) Langbeinite is a marine deposit of potassium sulfate and magnesium sulfate in soluble... read more
Lime, Dolomitic
Soil Amendment
Lime, Dolomitic
8201 (8.5% MgCO3, 87% CaCO3) 100 lbs has the liming capacity of 116 lbs of pure limestone. Use to sweeten soil and provide calcium where excess... read more
Lime, Hi-Cal
Soil Amendment
Lime, Hi-Cal
8198 (95% CaCO3) The most common and most frequently used soil conditioner. Hi-Cal lime has less than 5% magnesium oxide: recommended for soils with... read more
Soil Amendment
Soil Amendment
Monterey Epsom Salts
8228 (9.8% water-soluble Mg, 12.9% S) Magnesium is a building block of chlorophyll and therefore essential to efficient photosynthesis. In... read more
Phosphate, Tennessee Brown
Soil Amendment
Phosphate, Tennessee Brown
8252 (0-4-0, 23% total P2O5) The consistency of rich soil. Comes from the washing piles left behind when high-grade ore was extracted to produce... read more
Soil Amendment
Protassium+ Organic Standard Fines Sulfate of Potash
8246 (0-0-50, plus 17% S) The most economical source of available potassium and a good source of sulfur. Apply at 200–500#/acre or 1#/100 sq ft. read more
Soil Amendment
Soil Testing & Organic Fertilizer Recommendation Service
8194 Don’t guess—test! Applying fertilizers and soil amendments without the guidance of a professional soil test is like driving downtown with your... read more
Tiger 90CR Organic Sulfur
Soil Amendment
Tiger 90CR Organic Sulfur
8249 Used to lower soil pH (make it more acidic). Often helpful for both lowbush and highbush blueberries, and for potatoes. Lowering the pH of gravel... read more
Soil Amendment
Wollastonite
8207 (48% CaO and 52% SiO2) Soluble-grade and at least 95% pure (may contain trace amounts of iron, manganese and magnesium). Silicon is not... read more
ZeoMax Garden Aid
Soil Amendment
ZeoMax Garden Aid
8255 Zeolites are aluminosilicate lattices, derived from volcanic ash, that hold up to 55% of their weight in water in the small cavities of their... read more
Zinc, Liquid
Zinc, Liquidclearance
8327 (10% Zn, 5% S) Plants deficient in zinc show delayed maturity and stunted new growth. Zinc doesn’t move easily through plants so they need a... read more

Planting Mixes

Planting Mix
Ancients Rise Mix
8336 Whether they be abandoned heirlooms or wild seedlings, tucked in the woods or growing alongside an old road, apple trees live on for hundreds of... read more
Blueberry Booster
Planting Mix
Blueberry Booster
8321 A blend of granite meal, sulfur, Tennessee brown rock, Planter’s II trace minerals and Penobscot Blend Compost & Peat. Brings down the soil pH and... read more
Fall Fruit Tree Prep Mix
Planting Mix
Fall Fruit Tree Prep Mix
8333 To prepare your land in fall or winter for spring fruit-tree planting, use this mix. Without digging a hole, spread one bag on an area 4–6' in... read more
Planting Mix
Fruition Mix
8330 A balanced fertilizer to keep your bearing fruit trees healthy and productive. Gypsum (to maintain optimum calcium levels to promote disease... read more
Hole-Istic Spring Planting Mix
Planting Mix
Hole-Istic Spring Planting Mix
8324 Recommended for fruit trees at planting time. Formerly known as Fruit Tree Planting Mix. Our own well-balanced blend of soil amendments in a... read more
Vegemighty
Planting Mix
Vegemighty
8309 (3-2-2.5) The fertilizer formerly known as Bulb Planting Mix is still perfectly suitable for this purpose, but we are rebranding it to emphasize... read more