Grodan Rockwool

Grodan Hugo 6"x6"x5.5" Case of 64
Grodan Hugo 6"x6"x5.5" Case of 64
Brand: Grodan
Gro-Blocks™ are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro-Block™. Small plants can be fully grown in our larger Gro-Blocks™. Holes are perfect size for any 1.5 in starter plug. Come in packs labeled with instructions. Big …

Item #: 404609
In Stock
Price: $230.14

 


Grodan Growcubes 5.07 Cubic Feet Loose Box
Grodan Growcubes 5.07 Cubic Feet Loose Box
Brand: Grodan
Grodan Mini Cubes - The product consists of small stonewool croutons about the size of a sugar cube. 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 to …

Item #: 134182
In Stock
Price: $139.99

 


Grodan 4"x4"x4" With Hole Case of 144 No Shrink Wrap
Grodan 4"x4"x4" With Hole Case of 144 No Shrink Wrap
Brand: Grodan
Gro-Blocks™ are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro-Block™. Small plants can be fully grown in our larger Gro-Blocks™. Holes are perfect size for any 1.5 in starter plug. Come in packs labeled with instructions. Big …

Item #: 403946
In Stock
Price: $164.76

 


Grodan 4"x4"x4" With Hole Case of 144
Grodan 4"x4"x4" With Hole Case of 144
Brand: Grodan
This is the most popular size rockwool cube. 4 x 4 x 4 inch Growing Blocks with holes for smaller cubes. Used as a second stage from smaller cubes. The 1-1/2 inch hole will accept the small cubes that come in a sheet or the wrapped cubes that come in a …

Item #: 111022
In Stock
List Price: $235.46
Price: $211.74
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Grodan Big Mama 8"x8"x8" Inch, Case of 18
Grodan Big Mama 8"x8"x8" Inch, 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 wool 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 block, …

Item #: 134815
In Stock
Price: $163.72

 


Grodan Growcubes 6 Cubic Feet, 3 bags of 2 cu ft
Grodan Growcubes 6 Cubic Feet, 3 bags of 2 cu ft
Brand: Grodan
Grodan Mini Cubes - The product consists of small stonewool croutons about the size of a sugar cube. 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 to …

Item #: 111052
In Stock
Price: $146.96

 


Grodan A-OK 36/40 1.5 in x 1.5 in Plugs Case of 2940 No Shrink Wrap
Grodan A-OK 36/40 1.5 in x 1.5 in Plugs Case of 2940 No Shrink Wrap
Brand: 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 instructions in a shrink-wrapped sheet that fits a standard 10 x 20 tray (flat). Note: Item #713020 is …

Item #: 403941
In Stock
List Price: $331.14
Price: $278.02
You Save: $53.12

 


Grodan A-OK 36/40 1.5 in x 1.5 in Plugs Case of 2940
Grodan A-OK 36/40 1.5 in x 1.5 in Plugs Case of 2940
Brand: Grodan
Multiblocks are designed for cuttings or seed propagation and fit in the holes cut in the larger Rockwool cubes. The blocks come in sheets cut to fit in a standard 10 x 20 propagation tray. The blocks are tapered or V shaped to create an air space below …

Item #: 111002
In Stock
List Price: $441.02
Price: $343.94
You Save: $97.08

 


Grodan 1.5 in Starter Mini-Blocks MM40/40 Case of 2250 No Shrink Wrap
Grodan 1.5 in Starter Mini-Blocks MM40/40 Case of 2250 No Shrink Wrap
Brand: Grodan
Mini-Blocks™ sit in a tray (flat) without support for easy starting of seeds and cuttings. These Mini-Blocks™ are individually wrapped in white plastic to minimize algae growth. Remove wrapping and transplant into any loose media such as Grow-Cubes™ …

Item #: 403943
In Stock
List Price: $374.97
Price: $298.37
You Save: $76.60

 


Grodan 1.5 in Starter Mini-Blocks MM40/40 Case of 2250
Grodan 1.5 in Starter Mini-Blocks MM40/40 Case of 2250
Brand: Grodan
These cubes measure 1.5" x 1.5" x 1.5" and work very well for seedling and cutting propagation. Each cube is wrapped in plastic on four sides to help hold in moisture. To root cuttings, use the 10 x 20 inch tray, insert and dome. The cubes fit in the 10 x …

Item #: 111009
In Stock
List Price: $466.66
Price: $353.39
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Grodan A-OK 50/40 2 in x 2 in Plugs Case of 1500 No Shrink Wrap
Grodan A-OK 50/40 2 in x 2 in Plugs Case of 1500 No Shrink Wrap
Brand: 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 instructions in a shrink-wrapped sheet that fits a standard 10 x 20 tray (flat). Note: Item #713020 is …

Item #: 403942
In Stock
List Price: $311.04
Price: $265.96
You Save: $45.08

 


Grodan A-OK 50/40 2 in x 2 in Plugs Case of 1500
Grodan A-OK 50/40 2 in x 2 in Plugs Case of 1500
Brand: Grodan
Multiblocks are designed for cuttings or seed propagation and fit in the holes cut in the larger Rockwool cubes. The blocks come in sheets cut to fit in a standard 10'' x 20'' propagation tray. The blocks are tapered or V shaped to create an air space …

Item #: 131560
In Stock
List Price: $381.98
Price: $308.52
You Save: $73.46

 


Grodan Water Absorbent 3.5 cubic feet 45 lbs
Grodan Water Absorbent 3.5 cubic feet 45 lbs
Brand: Grodan
AgroDynamics Granulate 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 …

Item #: 111036
In Stock
This item has special shipping requirements, more info.
Price: $97.52

 


Grodan Slab 6"x3"x36" Case of 12
Grodan Slab 6"x3"x36" Case of 12
Brand: Grodan
6 x 3 x 36 inch rockwool slab. Growing Slabs are a great choice for vegetable crops or almost any plant that needs extra support at the base. Slabs come wrapped in U.V. resistant plastic that makes a good container for the roots to thrive. A 3 foot slab …

Item #: 111025
In Stock
Price: $120.81

 


Grodan Uni Slab 9.5"x8"x4" Case of 16
Grodan Uni Slab 9.5"x8"x4" 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 #: 134812
In Stock
Price: $96.94

 


Grodan 4"x4"x3" With Hole Case of 180
Grodan 4"x4"x3" With Hole Case of 180
Brand: Grodan
4 x 4 x 3 inch Growing Blocks with holes for smaller cubes. Used as a second stage from smaller cubes. The 1-1/2 inch round hole will accept the small cubes that come in a sheet or the wrapped cubes that come in a strip. Growing blocks are great for ebb …

Item #: 111023
In Stock
List Price: $257.19
Price: $224.13
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Grodan Slab 8"x3"x36" Case of 12
Grodan Slab 8"x3"x36" Case of 12
Brand: Grodan
8 x 3 x 36 inch rockwool slab, most popular size. Growing Slabs are a great choice for vegetable crops or almost any plant that needs extra support at the base. Slabs come wrapped in U.V. resistant plastic that makes a good container for the roots to …

Item #: 111027
In Stock
Price: $158.17

 


Grodan Grow Chunks 6 Cubic Feet, 3 bags of 2 cu ft
Grodan Grow Chunks 6 Cubic Feet, 3 bags of 2 cu ft
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 media …

Item #: 134814
In Stock
Price: $146.96

 


Grodan Slab 12"x3x36" Case of 8
Grodan Slab 12"x3x36" Case of 8
Brand: Grodan
12 x 3 x 36 inch rockwool slab. Growing Slabs are a great choice for vegetable crops or almost any plant that needs extra support at the base. Slabs come wrapped in U.V. resistant plastic that makes a good container for the roots to thrive. A 3 foot slab …

Item #: 111029
In Stock
Price: $158.83

 


Grodan 3"x3"x2.5" With Hole Case of 384 No Shrink Wrap
Grodan 3"x3"x2.5" With Hole Case of 384 No Shrink Wrap
Brand: Grodan
Gro-Blocks™ are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro-Block™. Small plants can be fully grown in our larger Gro-Blocks™. Holes are perfect size for any 1.5 in starter plug. Come in packs labeled with instructions. Big …

Item #: 403944
In Stock
List Price: $196.58
Price: $191.34
You Save: $5.24

 


Grodan 3"x3"x2.5" With Hole Case of 384
Grodan 3"x3"x2.5" With Hole Case of 384
Brand: Grodan
3 x 3 x 3 inch Growing Blocks with holes for smaller cubes. Used as a second stage from smaller cubes. The 1-1/2 inch round hole will accept the small cubes that come in a sheet or the wrapped cubes that come in a strip. Growing blocks are great for ebb …

Item #: 111014
In Stock
List Price: $286.18
Price: $245.10
You Save: $41.08

 


Grodan 3"x3"x4" With Hole Case of 256
Grodan 3"x3"x4" With Hole Case of 256
Brand: Grodan
3 x 3 x 4 inch Growing Blocks with holes for smaller cubes. Used as a second stage from smaller cubes. The 1-1/2 inch round hole will accept the small cubes that come in a sheet or the wrapped cubes that come in a strip. Growing blocks are great for ebb …

Item #: 111017
In Stock
List Price: $286.11
Price: $241.47
You Save: $44.64

 


Grodan 2 in Starter Mini-Blocks MM50/40 Case of 1440
Grodan 2 in Starter Mini-Blocks MM50/40 Case of 1440
Brand: Grodan
These cubes measure 2" x 2" x 1.5" and work very well for seedling and cutting propagation. Each cube is wrapped in plastic on four sides to help hold in moisture. To root cuttings, use the 10 x 20 inch tray, insert and dome. The cubes fit in the 10 x 20 …

Item #: 111011
In Stock
List Price: $421.83
Price: $325.49
You Save: $96.34

 


Grodan 4"x4"x2.5" With Hole Case of 216 No Shrink Wrap
Grodan 4"x4"x2.5" With Hole Case of 216 No Shrink Wrap
Brand: Grodan
Gro-Blocks™ are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro-Block™. Small plants can be fully grown in our larger Gro-Blocks™. Holes are perfect size for any 1.5 in starter plug. Come in packs labeled with instructions. Big …

Item #: 403945
In Stock
Price: $159.75

 


Grodan 4"x4"x2.5" With Hole Case of 216
Grodan 4"x4"x2.5" With Hole Case of 216
Brand: Grodan
4 x 4 x 2.5 inch Growing Blocks with holes for smaller cubes. Used as a second stage from smaller cubes. The 1-1/2 inch round hole will accept the small cubes that come in a sheet or the wrapped cubes that come in a strip. Growing blocks are great for ebb …

Item #: 111019
In Stock
List Price: $222.77
Price: $202.04
You Save: $20.73

 


Grodan Slab 6"x4"x36" Case of 9
Grodan Slab 6"x4"x36" Case of 9
Brand: Grodan
6 x 4 x 36 inch rockwool slab. Growing Slabs are a great choice for vegetable crops or almost any plant that needs extra support at the base. Slabs come wrapped in U.V. resistant plastic that makes a good container for the roots to thrive. A 3 foot slab …

Item #: 131556
In Stock
Price: $140.83

 


Grodan Macro Plugs Case of 1750, 35 Bags of 50
Grodan Macro Plugs Case of 1750, 35 Bags of 50
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 #: 134813
In Stock
List Price: $416.48
Price: $316.20
You Save: $100.28

 


Grodan Macro Plugs Case of 2000
Grodan Macro Plugs Case of 2000
Brand: Grodan
These rockwool plugs feature a slit for easy insertion of rooted cuttings. They fit perfectly into the hole of any standard rockwool block or any other type of growing medium.

Item #: 131557
In Stock
List Price: $343.74
Price: $272.56
You Save: $71.18

 


Grodan 3"x3"x2.5" No Hole Case of 384
Grodan 3"x3"x2.5" No Hole Case of 384
Brand: Grodan
3 x 3 x 3 inch Growing Blocks. Used as a second stage from smaller cubes. Growing blocks are great for ebb and flow hydroponic systems or for use as mid stage for plants eventually going on to Rockwool slabs. The blocks are individually wrapped in plastic …

Item #: 111013
In Stock
List Price: $286.18
Price: $241.52
You Save: $44.66

 


Grodan A-OK 25/40 1 in x 1 in Plugs Case of 6000
Grodan A-OK 25/40 1 in x 1 in Plugs Case of 6000
Brand: Grodan
Multiblocks are designed for cuttings or seed propagation and fit in the holes cut in the larger Rockwool cubes. The blocks come in sheets cut to fit in a standard 10'' x 20'' propagation tray. The blocks are tapered or V shaped to create an air space …

Item #: 131558
In Stock
List Price: $487.49
Price: $371.82
You Save: $115.67

 


Grodan Growcubes 6 Cubic Feet, 6 bags of 1 cu ft
Grodan Growcubes 6 Cubic Feet, 6 bags of 1 cu ft
Brand: Grodan
Grodan Mini Cubes - The product consists of small stonewool croutons about the size of a sugar cube. 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 to …

Item #: 111053
In Stock
List Price: $166.34
Price: $166.11
You Save: $0.23

 


Grodan Cress Plate Propagation Mat 10 in x 20 in - Case of 95
Grodan Cress Plate Propagation Mat 10 in x 20 in - Case of 95
Brand: Grodan
The ideal growing media for seed starts, microgreens, baby leaf crops and more. Thinnest Grodan® available. 10 x 20 inch mats fits in most propagation trays. Consistent structure results in quick and easy germination. The uniform density allows for equal …

Item #: 405728
In Stock
List Price: $151.97
Price: $145.87
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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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