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Additives & Conditioners

Increase your growing potential with a soil conditioner. Using these organic or mineral additives alone or together will:

• Increase water retention
• Add oxygen-holding capacity
• Increase nutrient retention
• Provide space for root growth

These beneficial products are offered for sale to improve the quality of garden soils as well as hydroponic growing media.

  • Azomite Rock Dust

    Azomite (0-0-0.2)

    This natural re-mineralizer helps grow stronger plants and better tasting crops.

    $29.95 $24.95
  • Growstone

    Super Soil Aerator

    Made from 100% recycled glass to significantly improve aeration and drainage.

    $21.95 $15.95
  • Ancient Forest Humus

    Ancient Forest Humus

    Contains pure, naturally decomposed forest humus — NO fillers or additives.

    $16.50 $12.95
  • Big & Chunky Perlite

    Big & Chunky

    Extra-big chunks of perlite provide the best drainage for superior root aeration.

    $59.95 $39.95
  • Roots Organics Big Worm

    Big Worm

    Contains NO chemicals, NO fillers and NO tricks — just natural goodness!

    $55.95 $32.95
  • Bio-Live Organic Fertilizer

    Bio-Live (5-4-2)

    A special mix to make sure your plants are covered from leaf tip to root hair.

    $13.95 $11.95
  • BuffaLoam Compost

    BuffaLoam Compost

    Contains no toxic chemicals, artificial ingredients, unknown fillers or waste products.

    $15.95 $12.95
  • Garden Charcoal

    Charcoal

    Perfect for terrariums! Charcoal removes odors and improves aeration.

    $7.95 $5.50
  • Worm Castings

    Earthworm Castings

    Gardeners know earthworm castings to be rich in nutrients and beneficial microbes.

    $24.95 $18.95
  • Diatomaceous Earth

    Fossil Shell Flour

    Perma-Guard is a pure, food grade diatomaceous earth (fresh water type).

    $39.95 $32.50
  • Organic Garden Compost

    Garden Compost

    Provides organic matter and natural nutrients for flowers and vegetables.

    $8.50 $5.50
  • Organic Insect Frass

    Insect Frass (2-2-2)

    A 100% vegan plant food made from the excrement and exoskeletons of insects.

    $26.95 $23.95
  • Marine Green Compost

    Marine Green

    Combines sustainably harvested ocean by-products with aged humus.

    $24.50 $12.95
  • Mega Chunk Perlite

    Mega Chunk

    The exact same product as Foxfarm’s Big & Chunky perlite — only cheaper!

    $49.95 $34.95
  • Metabolic Transformer

    Metabolic Transformer

    Contains a long list (too long to mention here) of beneficial microbes and more!

    $29.95 $24.95
  • Organic Compost

    Organic Compost

    Contains NO sewage sludge or bio-solids that are often found in commercial brands.

    $19.50 $14.95
  • Oyster Shell Lime (50 lb)

    Oyster Shell Lime

    Contains up to 39% calcium (Ca), plus many other important plant nutrients.

    $18.95 $16.50
  • Black Gold Perlite

    Perlite

    Screened for uniformity, this sterile medium is prized for its outstanding characteristics.

    $6.50 $4.50
  • Super Coarse Perlite

    PLANT!T Perlite

    Super coarse-grade contains lots of nooks and crannies for water and air space.

    $31.95 $24.95
  • Precision Perlite

    Precision Perlite

    Perfect for starting seeds, rooting cuttings or adding to any growing medium.

    $37.95 $19.95
  • Soil Moist

    Soil Moist

    These super absorbent “crystals” trap moisture that would normally be lost.

    $12.95 $10.95
  • Vermiculite (Medium Grade)

    Vermiculite (2cf)

    Improves aeration and helps support robust root structure. Asbestos free!

    $29.95 $25.95
  • Vermiculite

    Vermiculite (8qt)

    Use to root cuttings or to offer any plant more air capacity for healthy growth.

    $6.50 $4.50
  • Washed Sand

    Washed Sand

    A beautiful option to top-dress potted plants or small xeriscape gardens.

    $6.50 $4.50