Grodan Rockwool

Grodan Pro Hugo Gro-Block, 6" x 6" x 5.8", with hole 40/40, case of 64
Grodan Pro Hugo Gro-Block, 6" x 6" x 5.8", with hole 40/40, case of 64
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410725
In Stock
Price: $234.31

 


Grodan Pro Hugo, 6" x 6" x 5.8" (512 blocks - Loose on Pallet)
Grodan Pro Hugo, 6" x 6" x 5.8" (512 blocks - Loose on Pallet)
Brand: Grodan
Note: This bulk item is shipped as a full pallet without boxes or retail labeling. 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 …

Item #: 411262
In Stock
This item has special shipping requirements, more info.
Price: $1,901.75

 


Grodan Pro Delta 10, 4" x 4" x 4" (1,548 Blocks - Loose on Pallet)
Grodan Pro Delta 10, 4" x 4" x 4" (1,548 Blocks - Loose on Pallet)
Brand: Grodan
Note: This bulk item is shipped as a full pallet without boxes or retail labeling. 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 …

Item #: 411263
Out of Stock
This item has special shipping requirements, more info.
Price: $1,705.42

 


Grodan Delta 10 Block, 4" x 4" x 4", case of 144
Grodan Delta 10 Block, 4" x 4" x 4", case of 144
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410734
In Stock
Price: $213.77

 


Grodan Big Mama, 8" x 8" x 8", case of 18
Grodan Big Mama, 8" x 8" x 8", case of 18
Brand: 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 enough to grow a large plant for its entire life! When your plant outgrows its current …

Item #: 410717
In Stock
Price: $175.78

 


Grodan Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384
Grodan Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410735
In Stock
Price: $246.94

 


Grodan Delta 5.6 Block, 3" x 3" x 4", case of 256
Grodan Delta 5.6 Block, 3" x 3" x 4", case of 256
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410736
In Stock
Price: $245.21

 


Grodan Delta 6.5 Block, 4" x 4" x 2.5", case of 216
Grodan Delta 6.5 Block, 4" x 4" x 2.5", case of 216
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410737
In Stock
Price: $210.38

 


Grodan Delta 8 Block, 4" x 4" x 3", with hole, case of 180
Grodan Delta 8 Block, 4" x 4" x 3", with hole, case of 180
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410738
In Stock
Price: $228.48

 


Grodan Delta 4 Block, 3" x 3" x 2.5", no hole, case of 384
Grodan Delta 4 Block, 3" x 3" x 2.5", no hole, case of 384
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410739
In Stock
Price: $248.37

 


Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial
Grodan Pro Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384, Commercial
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410745
In Stock
Price: $192.46

 


Grodan Pro Delta 6.5 Block, 4" x 4" x 2.5", case of 216, Commercial
Grodan Pro Delta 6.5 Block, 4" x 4" x 2.5", case of 216, Commercial
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410746
In Stock
Price: $165.08

 


Grodan Pro Delta 10 Block, 4" x 4" x 4", case of 144, Commercial
Grodan Pro Delta 10 Block, 4" x 4" x 4", case of 144, Commercial
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410748
In Stock
Price: $168.09

 


Grodan A-OK 36/40 6/15 Starter Cubes, 1.5" x 1.5", 30 sheets of 98
Grodan A-OK 36/40 6/15 Starter Cubes, 1.5" x 1.5", 30 sheets of 98
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410732
In Stock
Price: $377.42

 


Grodan A-OK 25/40 10/10 Cubes, 1" x 1", 30 sheets of 200
Grodan A-OK 25/40 10/10 Cubes, 1" x 1", 30 sheets of 200
Brand: Grodan
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 processing. Whether sowing or transplanting, the new plug is the solution to achieving a …

Item #: 410731
In Stock
Price: $415.35

 


Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50
Grodan A-OK 50/40 6/15 Cubes, 2" x 2", 30 sheets of 50
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410733
In Stock
Price: $328.74

 


Grodan Pro A-OK 50/40 6/15, 2"x2", case of 1,500
Grodan Pro A-OK 50/40 6/15, 2"x2", case of 1,500
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410743
In Stock
Price: $280.06

 


Grodan MM 40/40 6/15 Plugs, 1.5" x 1.5" x 1.5", 15 per strip, 3 strips per pack
Grodan MM 40/40 6/15 Plugs, 1.5" x 1.5" x 1.5", 15 per strip, 3 strips per pack
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410740
In Stock
Price: $381.06

 


Grodan MM50/40 6/15 Block, 2" x 2" x 1.5", 60 strips of 24
Grodan MM50/40 6/15 Block, 2" x 2" x 1.5", 60 strips of 24
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410741
In Stock
Price: $345.85

 


Grodan Pro A-OK 36/40 6/15 Starter Cubes, 1.5" x 1.5", 30 sheets of 98, Commercial
Grodan Pro A-OK 36/40 6/15 Starter Cubes, 1.5" x 1.5", 30 sheets of 98, Commercial
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410744
In Stock
Price: $294.53

 


Grodan Pro MM 40/40 6/15 Plugs, 1.5" x 1.5" x 1.5", 2250 per box, Commercial
Grodan Pro MM 40/40 6/15 Plugs, 1.5" x 1.5" x 1.5", 2250 per box, Commercial
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410747
In Stock
Price: $308.75

 


Grodan Grow Chunks, 2 cu ft, case of 3
Grodan Grow Chunks, 2 cu ft, case of 3
Brand: Grodan
Super light and super versatile. 2 cubic foot bag. Grow Chunks are a larger version (3/4" square) of the popular Grow Cubes. They are great for direct planting or for use as a filling around blocks in containers. They can be easily mixed with other …

Item #: 410719
In Stock
Price: $165.81

 


Grodan Macro Plugs, 35 packs of 50 count
Grodan Macro Plugs, 35 packs of 50 count
Brand: Grodan
These rockwool plant starting plugs feature a slit for easy insertion of rooted cuttings. Ideal for growers using aeroponic EZ-Clone machines. They fit perfectly into the holes of any standard rockwool blocks, inserted into pebbles, or any other type of …

Item #: 410720
In Stock
Price: $340.12

 


Grodan UNI-SLAB, 9.5" x 8" x 4", case of 16
Grodan UNI-SLAB, 9.5" x 8" x 4", case of 16
Brand: Grodan
The UNI-SLAB combines all the benefits of our traditional slabs with the versatility of a block. Great stability for any size plant. The UNI-SLAB is completely wrapped, thus keeping all the roots of your plant safely contained within the slab, protected …

Item #: 410718
In Stock
Price: $99.87

 


Grodan Expert 15/100 Slab, 36" x 6" x 4", case of 12
Grodan Expert 15/100 Slab, 36" x 6" x 4", case of 12
Brand: Grodan
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, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of …

Item #: 410721
In Stock
Price: $138.15

 


Grodan Expert 15/75 Slab, 36" x 6" x 3", case of 12
Grodan Expert 15/75 Slab, 36" x 6" x 3", case of 12
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410722
In Stock
Price: $115.53

 


Grodan Expert 20/75 Slab, 36" x 8" x 3", case of 12
Grodan Expert 20/75 Slab, 36" x 8" x 3", case of 12
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410723
In Stock
Price: $151.80

 


Grodan Classic 30/75 Slab (wet), 12" x 3", case of 8
Grodan Classic 30/75 Slab (wet), 12" x 3", case of 8
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410727
In Stock
Price: $135.62

 


Grodan Expert Slab 15/75, 40" x 6" x 3", case of 12
Grodan Expert Slab 15/75, 40" x 6" x 3", case of 12
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 134566
In Stock
Price: $130.42

 


Grodan Grow-Cubes, 1 cu ft, case of 6
Grodan Grow-Cubes, 1 cu ft, case of 6
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410728
In Stock
Price: $185.64

 


Grodan Grow-Cubes, 5.3 cu ft (loose in box)
Grodan Grow-Cubes, 5.3 cu ft (loose in box)
Brand: 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 miniature cubes stack on top of each other and air pockets are created throughout the pot. Growcubes are difficult …

Item #: 410729
In Stock
Price: $151.47

 


Grodan Grow-Cubes, 2 cu ft, case of 3
Grodan Grow-Cubes, 2 cu ft, case of 3
Brand: 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 manufacturers cut all sizes from one batch of wool, Grodan is unique by making different …

Item #: 410730
In Stock
Price: $169.08

 


Grodan Cress Plate Bare Sheets 20" x 10" x 0.39", case of 95
Grodan Cress Plate Bare Sheets 20" x 10" x 0.39", case of 95
Brand: Grodan
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. Thinnest Grodan product available Perfectly sized for standard germination trays …

Item #: 410742
In Stock
Price: $141.65

 


Grodan Gro-Wool Medium Water Absorbent Granulate Rockwool, 3.5 cu ft
Grodan Gro-Wool Medium Water Absorbent Granulate Rockwool, 3.5 cu ft
Brand: Grodan
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 increases water holding capacity and aeration, improving plant growth and shelf life. …

Item #: 410749
In Stock
Price: $99.01

 


Grodan also makes Pargro Rockwool, a lower cost alternative with nearly identical quality.

Rockwool is made from molten rock spun into fibers like cotton candy. It's then pressed into different shapes and cut into cubes and slabs. The cubes and slabs feel like a sponge and will not breakdown. The small Multiblocks and Miniblocks can be used for starting cuttings or seeds. After the plants grow out of the small blocks, you can place them in the holes in the larger growing locks. From there you can place them on a slab for larger plants. Although the rockwool can be heat sterilized after use and re bagged, most hobby growers just throw them away after use. The Grodan Growcubes are small squares of rockwool about the size of a sugar cube. They are used for filling pots or mixing with Hydroton for added moisture. The Granulated rockwool is also for filling pots and is less expensive than the Growcubes but does not have the same aeration.

Rockwool Growing Blocks
Growing Blocks are used for small plants in a flood / drain tray
Rockwool Rooting Blocks
Multiblocks are used for seedlings and cuttings
Rockwool Rooting Blocks
Miniblocks for seedlings and cuttings
Granulated Rockwool
Granulated for filling pots
Large Rockwool Growing Block
Hugo Blocks for larger plants, best with a drip system
Rockwool Slab
Slabs for large plants watered by drip irrigation.
Rockwool Small Cubes
Growcubes in a pot

Learn More About Rockwool.

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