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Grow Rocks / Rockwool

  • Hydroton PLANT!T Clay Pebbles 10L 4mm-16mm

    PLANT!T horticultural clay pebbles are made from 100% natural clay. They are clean, pH stable, and offer great aeration and drainage in hydroponics, especially in flood and drain, deep water culture, and drip feed systems. Due to their unique structure...

    $9.95
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  • Grodan Gro-Slab 8"x36"x3"

    Grodan Stonewool is a proven hydroponics growing medium preferred by garden enthusiasts everywhere. This 36" x 8" x 3" Delta Expert Gro-Slab is perfect for "blocking on" smaller stonewool plugs and blocks to accommodate the final stages of plant growth...

    $9.95
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  • Hydroton PLANT!T Clay Pebbles 40L 4mm-16mm

    Hydroton PLANT!T Clay Pebbles 40L 4mm-16mm

    PLANT!T horticultural clay pebbles are made from 100% natural clay. They are clean, pH stable, and offer great aeration and drainage in hydroponics, especially in flood and drain, deep water culture, and drip feed systems. Due to their unique structure...

    $29.95
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  • Grodan Rockwool 4x4 w/ Hole

    Known for its quality, consistency and ease of use, high-performance Grodan stonewool is used by hydroponics gardeners the world over. Seeds or cuttings are started in these larger Grodan Gro-Blocks and, once rooted, the blocks are...

    $9.95
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  • Growstone Gnat Nix 9 L

    Scientifically proven Gnat Nix provides an effective, long-lasting physical barrier against fungus gnats. Used as a top dressing, it interrupts the gnats’ lifecycle by preventing adult emergence from hatching larvae and deterring females from...

    $13.95
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  • Growstone GS-1 Hydro Stones 1.5cf

    Growstone GS-1 Hydro Stones 1.5cf

    Growstones are a breakthrough, high-performance hydroponic growing medium specifically engineered for a balanced air-to-water ratio. Growstones deliver 67% more water retention and 12% more aeration than clay pebbles. The sustainable, earth-friendly...

    $34.95 $29.95
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  • Growstone GS-1 Hydro Stones 9L

    Growstone GS-1 Hydro Stones 9L

    Growstones are a breakthrough, high-performance hydroponic growing medium specifically engineered for a balanced air-to-water ratio. Growstones deliver 67% more water retention and 12% more aeration than clay pebbles. The sustainable, earth-friendly...

    $11.95
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  • Grodan Rockwool 3 x 3 w/ Hole

    Same quality, same value-priced, half-sized cases. Driest value-priced rockwool on the market. Made at the Grodan® factories. Plain brown half-case sizes. Better quality and drainage than other value-priced rockwool.

    $5.95
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  • Grodan Grow Chunks 2 cf Bag

    Light, airy and versatile. Grow-Chunks™ are about 3/4 in square each and can be used in pots, around blocks or alone. They are easily combined with other media, such as layering with coco fiber or clay pellets. They can also be combined with soil...

    $44.95
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  • Growstone LIFT Chunks 1.5CF

    Growstone® LIFT is the ideal drainage layer for all your indoor and outdoor plants. Simply add LIFT to the bottom of your container and breathe fresh air into your roots. LIFT allows air to enter the inner core of your roots helping them dry evenly...

    $27.95
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  • Sunleaves Coir Cubes 28 L

    Gardeners can kick salt to the spice rack with new triple fresh-water rinsed Sunleaves Coir Cubes! This all-natural and ready-to-use cube-shaped growing mediums low salinity makes it truly headache-free, and they aren't compressed, so they retain their...

    $12.95
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  • Sunleaves Rocks, 0.5"-1.5", 50L

    Locate a Retailer Sunleaves® Rocks are a reusable growing medium with serious water-holding power for use in any kind of garden. The 1/2-inch to 1.5-inch rocks are made by superheating shale to temperatures up to 2,000 degrees Fahrenheit,...

    $29.95
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  • Grodan Rockwool 4x4x3 w/ Hole

    Same quality, same value-priced, half-sized cases. Driest value-priced rockwool on the market. Made at the Grodan® factories. Plain brown half-case sizes. Better quality and drainage than other value-priced rockwool.

    $8.95
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  • Grodan Rockwool 6 x 6 w/ Hole

    Same quality, same value-priced, half-sized cases. Driest value-priced rockwool on the market. Made at the Grodan® factories. Plain brown half-case sizes. Better quality and drainage than other value-priced rockwool.

    $3.95
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