1100 East Delhi St
North Las Vegas, Nevada

Supplying a wide range of organic and conventional products for commercial and home horticulture in the Mojave Desert 

Soil Amendments

Soil amendments are added to soils to improve their physical, biological or chemical properties. Soil amendments add nutrients to the soil as well. Viragrow uses different soil amendments in soil mixes. You can purchase your own soil amendments and make your own custom soil mix. Or let Viragrow make it for you!

Viragrow Delivers!

Cottonseed Meal       5-2-1          15 lb.                                                                          SOLD OUT                   

 Cottonseed meal is a slow release, complete fertilizer as well as a soil amendment which adds organic matter back to the soil. Cottonseed meal has an acidic reaction in the soil which helps reduce alkalinity. Cottonseed meal is the recycled residue from ginning cotton and has been used by organic growers successfully for decades. Cottonseed meal is an excellent choice for summer fertilizing roses, camellias, azaleas, vegetables and flower beds.

Incorporate 10 to 15 lb. per 100 square feet. Sidedress vegetables with 5 lbs. per 100 foot row.

Use for:

  • Increasing soil acidity
  • Summer slow release fertilizer application
  • Organic fertilizer and soil amendment

Dispersul (Water dispersable sulfur)

Pure sulfur in a form that dissolves easily in water. No more granular sulfur that is visible after three years. The price is nearly the same but the time needed to acidify the soil is immediate.

EZ Green Soil Amendment and Fertilizer              1 cubic foot  

OMRI Listed

100% Composted Chicken Manure

E Z GREEN has been favored by professional growers in Southern California for over 30 years.

E Z GREEN is a low odor, composted organic soil amendment and fertilizer made from chicken manure that contains both major and trace elements. E Z GREEN has been listed by the Organic Materials Review Institute (OMRI) for use in organic production.

E Z GREEN® is a stable, low odor composted soil amendment that will not burn crops and plants when used as recommended.

Use for:

  • Soil amendment for new lawns
  • Soil amendment for gardens and raised beds
  • Soil amendment for soil mixes
  • Organic fertilizer for lawns, gardens, fruit trees, flowers and ornamentals
  • Topdressing lawns

EZ Green rates of application from website.

GardenMAX      1 cubic foot/37 lb bag

Premium Soil Amendment

This is a ‘Fix It’ solution if your garden is not producing like it should. GardenMAX™ is powered by BioLife Complex™ which targets depleted and declining soils to revitalize the natural growth cycle. Beneficial microbes, trace elements, pH conditioners restore the natural balance in the soil.  Apply it to the top of the soil and water-in to activate or mix it with the soil when replanting. 

1 bag covers 50 square feet.

Use for revitalizing garden soils that have become unproductive over time.

GardenMax website for more information.

Gypsum    40 lb.    15% Sulfur    

Gypsum soil amendment improves drainage in soils high in exchangeable sodium. High sodium content in soils causes applied water to puddle and drain poorly. Gypsum mixed into the soil and irrigated increases the calcium content of soils and aids in removing sodium. Removal of sodium improves plant growth, plant health and soil drainage.


Soil and plant improvement:

Apply approximately 40 pounds of gypsum every 200 square feet and mix into the top 4 to 6 inches. Irrigate the soil to remove sodium. To determine the exact amount of gypsum needed for large areas requires a professional soil test.

Use for:

  • Adding calcium to soils
  • Neutral pH
  • Removing excess sodium from soils
  • "Soften" soil made hard by the presence of sodium salts

Kelp Meal   3 and 55 lbs                                                                                  SOLD OUT

Viragrow’s Norwegian sea kelp is processed using cold water, preserving as much of the product in its natural form as possible.

Incorporate Viragrow’s sea kelp into the soil as a dry product and watered in or extracted as a tea for liquid applications to the soil or as a foliar spray directly on plants.


Soil amendment:

Use 1 pound of sea kelp every 100 square foot of soil or 100 foot of row and incorporate to a depth of 4 to 6 inches. As a soil amendment use in a ratio of 1lb of sea kelp every 3 cubic yards of soil.



Use 1 to 2 tbs per gallon of water and seep for 24 hours. Apply within 24 hours. Use as a drench or apply to the foliage with a good quality wetting agent.

Use for:

  • Organic Fertilizer
  • Stimulating Soil Microorganisms
  • Adding Natural Chelates
  • Improving Biological Properties of Soil


Kelzyme    “Rock Dust”                                                               Available by the pound or ton

Kelzyme is mined from ancient marine sediments in Northern Nevada. Kelzyme contains a myriad of trace minerals normally eroded during irrigations or cropping cycles. Kelzyme is OMRI approved for organic livestock feed and crop fertilizer/soil amendment. Mineral analysis conducted by Wallace Laboratories in El Segundo, California, is available upon request.

Use for:

  • Adding calcium and trace minerals to heavily cropped soils
  • Adding dozens of soil minerals to soil that were lost from irrigation
  • Renewing soils that were previously productive but yields are diminishing

Organic Magic  30 lb                         Approved for Organic Farming

Organic Magic is a soil additive that is water soluble and lowers soil pH or alkalinity very quickly. Use for acid loving plants such as blueberries, camelias, azaleas and others.

Perlite                                                                 Available by the cubic foot

Perlite is a lightweight (30–150 kg/m3) natural product made by expanding volcanic minerals with heat. In soil mixes, perlite substitutes for sand in the mineral component of a soil mix to decrease final weight, improve drainage and prevent soils from compacting.

It is a primary component of lightweight soils. It is commonly used in plant propagation, container plants where weight is a concern, rooftop gardening and hydroponics. It can be used as a substitute for diatomaceous earth for filtering. Perlite is relatively inert, has a very low cation exchange capacity (CEC) and does not retain fertilizer in a soil mix, an important advantage under some growing conditions.

Use for:

  • Soil Mixes where weight is a concern
  • Hydroponics
  • Aeroponics
  • Propagation

Soil Sulfur    4 and 20 lb.   

Sulfur is a plant macronutrient: it is needed by plants in large amounts, particularly during development. Soil sulfur is applied to soils to reduce alkalinity (pH) and enhance plant uptake of minor elements such as iron, manganese and zinc. Soil sulfur can also be used in place of gypsum for removing sodium and improving drainage if soils have a high lime content. Apply it to warm, moist soils for faster reaction due to soil microorganisms and the lowering of soil pH.

The amount to apply depends on the soil but generally is from 2 to 5 pounds per hundred square feet.

Use for:

  • Supplying sulfur fertilizer to plants
  • Lowering soil pH
  • Removing excess sodium from soils
  • Substitute for gypsum in calcareous soils
  • "Soften" soils made hard by the presence of sodium salts

Sphagnum Peat Moss                                                    SOLD OUT

Sphagnum peat moss is a natural product and represents over a hundred different mosses and is harvested from peat bogs. Sphagnum peat moss is used in soil mixes to increase aeration, water retention, lower alkalinity (pH) and retain nutrients (increase cation exchange capacity). This can be particularly useful in sandy soils or soil mixes that contain perlite or alkaline soils.

Sphagnum peat moss is used on golf courses, floral arrangements, for hanging baskets liners, orchid production, potting mixes, mushroom cultivation, carnivorous plants such as Venus fly trap, sundews and pitcher plants. It is also used for filtration and fungicidal and bactericidal properties.

Use for:

  • Lowering soil pH
  • Improving soil moisture holding
  • Improving drainage in soil mixes
  • Improving soil aeration

TurfMAX       37 lb bag

Premium Soil Amendment

Sometimes your lawn just isn’t growing like it should. TurfMAX™ Soil Treatment is a ‘Fix It’ solution for your lawn. Apply it to the top of freshly mowed grass or under new sod and water‐in to activate.

1 Bag covers 50 square feet

Use for revitalizing soils that have become slowly depleted over time. 

TurfMAX website

Vermiculite                                                                   Sold by the cubic foot   

Vermiculite is a lightweight natural product made by expanding clay minerals (mica) with heat. In soil mixes vermiculite, like perlite, substitutes for sand in the mineral component of a soil to decrease its final weight, improve drainage and prevent soils from compacting. Unlike perlite, vermiculite has a relatively high cation exchange capacity (100 -150 meq/100 g) and can retain fertilizer in a soil mix.

Use for:

  • plant propagation
  • seed germination
  • storing bulbs, seed and root crops
  • hydroponics
  • mushroom cultivation
  • heat insulation
  • waste treatment

Viragrow Compost        ! cubic foot

100% Compost

Viragrow Compost is the cornerstone for our premium soil mixes. Mix it with raw, desert soils to enhance its structure, chemistry and biological activity or add it to your existing unproductive soil. 

Viragrow’s Compost contains no soil or sand but is a 100% blend of recycled green waste (85-90%) and Exceptional Quality (EQ*) biosolids (10-15%). Viragrow Compost is rich in major and minor plant nutrients, ideal for improving desert soils, mixed with silica sand as a soil mix or used as a substitute for peat moss in specialty soil mixes.

Use in:

  • Raised beds
  • Planter Boxes
  • Containers
  • Planting mixes
  • Gardens
  • Lawns
  • Topdressing

Zeolite    “Rock Dust”                                                                  Available by the pound or ton

Viragrow’s zeolite is an extremely pure (96%) clinoptilite-type of zeolite with a high cation exchange capacity (CEC) and water holding capacity. Because it is finely ground it is highly reactive with a high surface activity. Zeolite is used to improve the exchange capacity, fertilizer retention and water retention of a soil mix.

Use for:

  • Calcium supplement
  • Improving cation exchange (fertiilizer retention)
  • Water filtration
  • Odor control

Viragrow Super Sacks                               1 cubic yard

If you need to haul a cubic yard of bulk material you might want to consider purchasing one of our super sacks. It will fit in the back of your pickup and you or your neighbors can use it again! Or bring it back for in-store credit toward your next purchase.

Used Pallets

Yes, we have used pallets and we sell them at a ridiculously low price. 

  • Use for:
  • Gardening
  • Vertical gardens
  • Garden furniture

Let your imagination run WILD!