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Rockwool

Shop our selection of rockwool and stonewool products from brands like Grodan, Cultiwool and more.

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  • Grodan A-OK Starter Plug, 36/40, 1.5 inch plugs, each sheet shrink wrapped (98 plugs/Sheet) (30 She
    Grodan A-OK 25/40 - 1 in x 1 in Plugs (200/Sheet) (30 She
    Save up to $224.50 Save $0.00
    $463.42 - $763.50
    $463.42 - $763.50
    $463.42
    $328.00 - $539.00
    $328.00 - $539.00
    $328.00

    Grodan® Stonewool A-OK Starter Plugs™

    Grodan

    A-OK Starter Plugs™ for starting seeds and rooting of cuttings prior to plugging into the larger Gro-Blocks. A-OK Starter Plugs™ come labeled with ...

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    $463.42 - $763.50
    $463.42 - $763.50
    $463.42
    $328.00 - $539.00
    $328.00 - $539.00
    $328.00
    Save up to $224.50 Save $0.00
  • Save up to $10.34 Save $0.00
    $13.62 - $25.34
    $13.62 - $25.34
    $13.62
    $9.00 - $15.00
    $9.00 - $15.00
    $9.00

    Rockwool Block Cover

    Hydrofarm

    PLASTIC BLOCK COVERS Reflect light to plant leaves, where it’s needed most. Block light from media. Eliminate algae and mildew growth. 40 dual sid...

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    $13.62 - $25.34
    $13.62 - $25.34
    $13.62
    $9.00 - $15.00
    $9.00 - $15.00
    $9.00
    Save up to $10.34 Save $0.00
  • Save $56.76 Save $0.00
    $212.76
    $212.76 - $212.76
    $212.76
    $156.00
    $156.00 - $156.00
    $156.00

    Grodan Improved GR40 Uniblock 8" x 8" x 4" (Case of 36)

    Grodan

    Grodan ImprovedUniblock GR40, 8" x 8" x 4"Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers ...

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    $212.76
    $212.76 - $212.76
    $212.76
    $156.00
    $156.00 - $156.00
    $156.00
    Save $56.76 Save $0.00
  • Grodan Improved Hugo, 6' x 6Inches x 6Inches, case 64
    Grodan Improved Jumbo, 6Inches x 6Inches x 4Inches, with hole, case of 64
    Save up to $441.25 Save $0.00
    $209.52 - $1,979.25
    $209.52 - $1,979.25
    $209.52
    $148.00 - $1,538.00
    $148.00 - $1,538.00
    $148.00

    Grodan Gro-Block Improved

    Grodan

    New Grodan Improved! Improved product at current pricing. New density + new hydrophilic technology = better water distribution and root development...

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    $209.52 - $1,979.25
    $209.52 - $1,979.25
    $209.52
    $148.00 - $1,538.00
    $148.00 - $1,538.00
    $148.00
    Save up to $441.25 Save $0.00
  • Grodan MacroPlug Round w/ Slit (50/Bag) (35 B
    Grodan MacroPlug Round w/ Slit Bulk (2
    Save up to $168.65 Save $0.00
    $473.29 - $573.65
    $473.29 - $573.65
    $473.29
    $335.00 - $405.00
    $335.00 - $405.00
    $335.00

    Grodan® Stonewool MacroPlugs™

    Grodan

    MacroPlugs™ are 1.5 in round with a slit that allows easy insertion of a cutting. These loose round plugs fit perfectly into the Gro-Block™ hole. F...

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    $473.29 - $573.65
    $473.29 - $573.65
    $473.29
    $335.00 - $405.00
    $335.00 - $405.00
    $335.00
    Save up to $168.65 Save $0.00
  • Grodan Gro-Wool Absorbent Granulate
    Save $65.99 Save $0.00
    $241.99
    $241.99 - $241.99
    $241.99
    $176.00
    $176.00 - $176.00
    $176.00

    Grodan Gro-Wool Absorbent Granulate

    Grodan

    Granulated rockwool works great on its own or mixed with other loose media, such as expanded clay rocks or coconut fiber. If planting in containers...

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    $241.99
    $241.99 - $241.99
    $241.99
    $176.00
    $176.00 - $176.00
    $176.00
    Save $65.99 Save $0.00
  • Grodan Grow-Cubes Large 2 cu ft
    Save $72.00 Save $0.00
    $264.00
    $264.00 - $264.00
    $264.00
    $192.00
    $192.00 - $192.00
    $192.00

    Grodan Grow Cubes (2 cu.ft.)

    Grodan

     Grodan Grow Chunks, Super light and super versatile. 2 cubic foot bag. Grow Chunks are a larger version (3/4" square) of the popular Grow Cubes. ...

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    $264.00
    $264.00 - $264.00
    $264.00
    $192.00
    $192.00 - $192.00
    $192.00
    Save $72.00 Save $0.00
  • Grodan Stonewool Grow-Chunks 2 cu ft
    Save $66.00 Save $0.00
    $243.00
    $243.00 - $243.00
    $243.00
    $177.00
    $177.00 - $177.00
    $177.00

    Grodan Grow Chunks (2 cu.ft.)

    Grodan

     Grodan Grow Chunks, 2cf bag, 3 BAGS PER CASE-Super light and super versatile. Grow Chunks are a larger version (3/4" square) of the popular Grow ...

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    $243.00
    $243.00 - $243.00
    $243.00
    $177.00
    $177.00 - $177.00
    $177.00
    Save $66.00 Save $0.00
  • Grodan Grow-Cubes Bulk Loose Box 5.7 cu ft
    Save $53.99 Save $0.00
    $199.99
    $199.99 - $199.99
    $199.99
    $146.00
    $146.00 - $146.00
    $146.00

    Grodan Grow-Cubes (5.3 cu ft)(Loose in box)

    Grodan

    This loose fill, non-bagged product consists of small stonewool croutons about the size of a fingernail. When you use this potting mix the miniatur...

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    $199.99
    $199.99 - $199.99
    $199.99
    $146.00
    $146.00 - $146.00
    $146.00
    Save $53.99 Save $0.00
  • Grodan Delta Big Mama Block 8 in x 8 in x 8 in
    Save $50.55 Save $0.00
    $198.55
    $198.55 - $198.55
    $198.55
    $148.00
    $148.00 - $148.00
    $148.00

    Grodan Big Mama (8"x 8"x 8")

    Grodan

    BIG MAMA is the largest block ever produced by Grodan. It is 8" square and contains over twice the amount of rockwool as the popular Hugo block. T...

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    $198.55
    $198.55 - $198.55
    $198.55
    $148.00
    $148.00 - $148.00
    $148.00
    Save $50.55 Save $0.00