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60ML Syringe with plastic needle for EC/pH tests

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The perfect tool for watering Rockwool. The syringe with a needle made from 1/4" tubing allows you to easily take a water sample from your Rockwool. If the water sampl...

$5.61$6.179% off
$5.61 $6.17 10% off

60ML Syringe with plastic needle for EC/pH tests

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AO 25/40 10/10 Cubes, 1x1", 30 sheets of 200

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The renewed plugs result in a maximum number of useable and homogeneous seedlings. Both form and strength have been greatly improved for good machine and manual proces...

$606.18$666.809% off
$606.18 $666.80 10% off

AO 25/40 10/10 Cubes, 1x1", 30 sheets of 200

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AO 36/40 6/15 Cubes, 1.5x1.5", 30 sheets of 98

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$548.39$603.239% off
$548.39 $603.23 10% off

AO 36/40 6/15 Cubes, 1.5x1.5", 30 sheets of 98

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AO 50/40 6/15 Cube, 2x2", 30 sheets of 50

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$474.98$522.489% off
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AO 50/40 6/15 Cube, 2x2", 30 sheets of 50

$474.98$522.489% off
$474.98 $522.48 10% off

AO 50/40 6/15 Cube, 2x2", 30 sheets of 50

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Big Mama 8x8x8, case of 18

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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. This block is big enou...

$161.42$177.569% off
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Big Mama 8x8x8, case of 18

$161.42$177.569% off
$161.42 $177.56 10% off

Big Mama 8x8x8, case of 18

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Black Hydro Bucket w/o Elbows

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This bucket is designed for growing systems using loose media such as clay pellets (Hydroton), GRODAN Grow-Cubes, or coco coir.

$7.17

Black Hydro Bucket w/o Elbows

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Classic 30/75 Slab (wet), 12"x3", case of 8

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$139.94$153.939% off
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Classic 30/75 Slab (wet), 12"x3", case of 8

$139.94$153.939% off
$139.94 $153.93 10% off

Classic 30/75 Slab (wet), 12"x3", case of 8

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Delta 10 Block, 4x4x4", case of 144

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$252.53$277.789% off
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Delta 10 Block, 4x4x4", case of 144

$252.53$277.789% off
$252.53 $277.78 10% off

Delta 10 Block, 4x4x4", case of 144

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Delta 4 Block, 3"x3"x2.5" with hole, case of 384

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$306.78$337.469% off
$306.78 $337.46 10% off

Delta 4 Block, 3"x3"x2.5" with hole, case of 384

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Delta 4 Block, 3x3x2.5", no hole, case of 384

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$306.78$337.469% off
$306.78 $337.46 10% off

Delta 4 Block, 3x3x2.5", no hole, case of 384

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Delta 5.6 Block, 3"x3"x4", case of 256

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$306.71$337.389% off
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Delta 5.6 Block, 3"x3"x4", case of 256

$306.71$337.389% off
$306.71 $337.38 10% off

Delta 5.6 Block, 3"x3"x4", case of 256

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Delta 6.5 Block, 4"x4"x2.5", case of 216

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$238.81$262.699% off
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Delta 6.5 Block, 4"x4"x2.5", case of 216

$238.81$262.699% off
$238.81 $262.69 10% off

Delta 6.5 Block, 4"x4"x2.5", case of 216

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Delta 8 Block, 4"x4"x3", with hole, case of 180

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$268.76$295.649% off
$268.76 $295.64 10% off

Delta 8 Block, 4"x4"x3", with hole, case of 180

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Dutch Leach Tray Elbow

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For the Dutch Leach Tray. Case of 720

$1.75

Dutch Leach Tray Elbow

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Dutch Leach Tray Endcap

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For the Dutch Leach Tray.

$0.62

Dutch Leach Tray Endcap

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Dutch Pot Elbows, bag of 2

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Elbow connectors for Grodan Dutch Pot hydroponic system.

$1.95

Dutch Pot Elbows, bag of 2

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Expert 15/100 Slab, 6"x4", case of 12

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PLEASE NOTE: THIS ITEM IS NOW 12 PER CASE. Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blo...

$142.99$157.299% off
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Expert 15/100 Slab, 6"x4", case of 12

$142.99$157.299% off
$142.99 $157.29 10% off

Expert 15/100 Slab, 6"x4", case of 12

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Expert 15/75 Slab, 36x6x3, case of 12

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Grodan

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$107.25$117.989% off
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Grodan

Expert 15/75 Slab, 36x6x3, case of 12

$107.25$117.989% off
$107.25 $117.98 10% off

Expert 15/75 Slab, 36x6x3, case of 12

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Expert 20/75 Slab, 8"x3", case of 12

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$138.76$152.649% off
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Grodan

Expert 20/75 Slab, 8"x3", case of 12

$138.76$152.649% off
$138.76 $152.64 10% off

Expert 20/75 Slab, 8"x3", case of 12

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Expert Slab 15/75, 40x6x3, case of 12

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

$118.28$130.119% off
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Grodan

Expert Slab 15/75, 40x6x3, case of 12

$118.28$130.119% off
$118.28 $130.11 10% off

Expert Slab 15/75, 40x6x3, case of 12

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Gro Block Improved Large 3"GR5,6 w/ hole 3"x3"x4" Shrink/Str

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Grodan ImprovedGro Block Improved GR5.6 Large 3" w/Hole 3" x 3" x 4" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The N...

$306.71$337.389% off
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Gro Block Improved Medium 4"GR7,5 w/ hole 4"x4"3.1" Shrink/S

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Grodan ImprovedGro Block Improved GR7.5 Medium 4" w/Hole 4" x 4" x 3.1" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in Th...

$294.10$323.519% off
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Gro Block Improved Mini Block 2" (Shrinkwrap/Strip)

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Grodan ImprovedGro Block Improved Mini Block 2" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top gr...

$461.09$507.209% off
$461.09 $507.20 10% off

Gro Block Improved Mini Block 2" (Shrinkwrap/Strip)

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Gro-Smart Tray 78 cell (5/cs) Terracotta

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Grodan® Gro-SmartTM Tray Your Grodan Starter plugs, Mini-BlocksTM and Gro-BlocksTM have finally found a home. This durable Dutch tray has double-sided features. Use t...

$16.91$18.609% off
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Gro-Smart Tray 78 cell (5/cs) Terracotta

$16.91$18.609% off
$16.91 $18.60 10% off

Gro-Smart Tray 78 cell (5/cs) Terracotta

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Gro-Wool Medium Water Absorbent Granulate, 3.5 cu ft

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Granulated rockwool can be used alone or as an amendment to organic based mixes. For example, the addition of water absorbant granulate to peat mixes at 25-50% volume ...

$88.40$97.249% off
$88.40 $97.24 10% off

Gro-Wool Medium Water Absorbent Granulate, 3.5 cu ft

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Grodan "The Giant" Pot

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The Giant holds about 1 gallon more than what is commonly known as a 5 gallon nursery pot.It is a nice sturdy pot for all customers using loose media. Perfect pot for ...

$6.66

Grodan "The Giant" Pot

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Grodan (PRO) Delta & Hugo Loose on Pallet

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Grodan Delta 10 in bulk form on a pallet. Loose, no wrap. Sold in pallets only. 1 pallet = 1548. D10 40/40*1 MID; L PTM WG (TA) T Grodan Hugo in bulk form on a pallet...

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Grodan A-OK 25/40 10/10 Cubes, 1" x 1", 30 sheets of 200

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The renewed plugs result in a maximum number of useable and homogeneous seedlings. Both form and strength have been greatly improved for good machine and manual proces...

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Grodan

Grodan A-OK 36/40 6/15 Starter Cubes, 1.5" x 1.5", 30 sheets of 98

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Grodan

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

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Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

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Grodan

Grodan Big Mama, 8" x 8" x 8", case of 18

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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. This block is big enou...

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Grodan

Grodan Classic 30/75 Slab (wet), 12" x 3", case of 8

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Grodan

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

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Grodan

Grodan Cress Plate 495x240x10; bare sheet 95/cs

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The Grodan Cress Plate is the ideal growing media for microgreens and baby leaf crops. 20" x 10" x 0.39" (495 x 240 x 10 mm). This item is a case of 95 bare sheets. ...

$151.97$167.179% off
$151.97 $167.17 10% off

Grodan Cress Plate 495x240x10; bare sheet 95/cs

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Grodan Cress Plate Bare Sheets 20" x 10" x 0.39", case of 95

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The Grodan Cress Plate is the ideal growing media for microgreens and baby leaf crops. 20" x 10" x 0.39" (495 x 240 x 10 mm). This item is a case of 95 bare sheets. T...

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$246.06
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Grodan Delta 10 Block, 4" x 4" x 4", case of 144

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Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

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Grodan

Grodan Dutch Leach Tray Kit, 6" x 40"

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A popular do-it-yourself slab system choice. The 6" x 40" tray holds 6" slabs and comes with 2 elbows and a plug.

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Grodan Dutch Leach Tray, 6" x 40"

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6" x 40" tray holds 6" slabs. (Elbows and end-cap not included.)

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Grodan Dutch Pot Elbows, Pack of 2

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Elbow connectors for Grodan Dutch Pot hydroponic system.

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Grodan Dutch Pot Hydro Bucket (without Elbows)

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This bucket is designed for growing systems using loose media such as clay pellets (Hydroton), GRODAN Grow-Cubes, or coco coir.

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Grodan

Grodan Expert 20/75 Slab, 36" x 8" x 3", case of 12

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Grodan

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand ma...

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Grodan

Grodan GR10 Improved 4" x 4" x 4" loose pallet 1584 blocks

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Grodan Improved GR10 (White Foil) 4” x 4” x 4” (1584 blocks – Loose on Pallet) Grodan ImprovedGrodan partnered with the Wageningen University and Research facility in...

$1,573.77$1,731.159% off
$1,573.77 $1,731.15 10% off

Grodan GR10 Improved 4" x 4" x 4" loose pallet 1584 blocks

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Grodan GR40 Uniblock 8”x8”x4” Baby Mama, case of 36

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

$174.84$192.329% off
$174.84 $192.32 10% off

Grodan GR40 Uniblock 8”x8”x4” Baby Mama, case of 36

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$246.06
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Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4"

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Grodan ImprovedGro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Ne...

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$299.06
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Grodan Gro Block Improved GR4 Small 3"

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Grodan ImprovedGro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The N...

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$159.13
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Grodan Gro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6"

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Grodan ImprovedGro Block Improved GR6.5 Small 4" w/Hole, 4" x 4" x 2.6" StripGrodan partnered with the Wageningen University and Research facility in The Netherlands a...

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$487.66
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Grodan Gro Block Improved Mini Block 1.5"

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Grodan ImprovedGro Block Improved Mini Block 1.5" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top ...

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Grodan Gro-Block Improved

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

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Grodan Gro-Block Improved

$1,531.30
$1,531.30

Grodan Gro-Block Improved

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Grodan Gro-Block, Hugo Improved 6" x 6" x 5.8" case of 64

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Grodan Improved Hugo (White Foil) 6” x 6” x 5.8” (Case of 64) Grodan ImprovedGrodan partnered with the Wageningen University and Research facility in The Netherlands ...

$248.34$273.179% off
$248.34 $273.17 10% off

Grodan Gro-Block, Hugo Improved 6" x 6" x 5.8" case of 64

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Grodan Gro-Block, Jumbo Improved 6" x 6" 4" case of 64

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Grodan Improved Jumbo (White Foil) 6” x 6” x 4” (Case of 64) Grodan ImprovedGrodan partnered with the Wageningen University and Research facility in The Netherlands a...

$209.48$230.439% off
$209.48 $230.43 10% off

Grodan Gro-Block, Jumbo Improved 6" x 6" 4" case of 64

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