Grodan A-Ok 1.5" Starter Plugs 98/unit

A-Ok Starter Plugs™ are for starting seeds and rooting cuttings prior to plugging into larger Gro-Blocks™.  The 1.5” size work perfectly in the Gro-Smart tray.  The advantage of the Gro-Smart tray is it elevates the plugs above the waterline and ensures good airflow around the plugs. A-Ok plugs come labeled with instructions in a shrink-wrapped sheet that fits a standard 10 x 20 tray (flat). 
The 1.5” A-Ok fits holes in all our Gro-blocks perfectly. ... Read More
$17.15 each
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Grodan 1.5 Inch Starter Mini-Blocks MM40/40

Starter MINI-BLOCKS™ can sit in a tray (flat) without support for easy starting of seeds and cuttings. They are individually wrapped to minimize algae growth. For best results put them on the flat side of the GRO-SMART Tray™ to ensure good airflow around the cubes. Remove wrapping and transplant into any loose media such as GROW-CUBES™ or GROW-CHUNKS™, or leave wrapping on and set on top of a larger GRO-BLOCK™. These cubes are popular for production of aquatic plants. The... Read More
$0.25 each

GRODAN - Gro Blocks 4" x 4" x 2.5" (6 Blocks)

Gro-Blocks™ are similar to a ‘plant container’. Need a 3” pot? Then choose a 3” Gro-Block. Plants can be fully grown in our Gro-Blocks, for larger plants try Hugo or Big Mama our two giant sizes. Gro-Block holes are the perfect size for any 1.5” starter plug or Macroplug. The bases of the Gro-Blocks are grooved to promote drainage and to avoid "wet feet". Gro-Blocks™ comes in strips labeled with instructions. Big Mama and Hugo are sold individually with instructions on the... Read More
$5.98 each
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GRODAN - Gro Blocks - 4" x 4" x 2.5" (216 Blocks)

Grodan: Blocks are easy to saturate and water is distributed uniformly throughout the entire block, resulting is vigorous plant growth. Due to the variations in the small and large pores, the roots are always guaranteed a sufficient supply of air and water. Excellent root growth throughout the block is ensured due to the uniform distribution of water and nutrients. The firmness of GRODAN Delta blocks ensures stability during the propagation process as they are spaced and picked up... Read More
$179.46 each
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GRODAN - Gro Blocks 4" x 4" x 4" (6 Blocks)

Gro-Blocks™ are similar to a ‘plant container’. Need a 3” pot? Then choose a 3” Gro-Block. Plants can be fully grown in our Gro-Blocks, for larger plants try Hugo or Big Mama our two giant sizes. Gro-Block holes are the perfect size for any 1.5” starter plug or Macroplug. The bases of the Gro-Blocks are grooved to promote drainage and to avoid "wet feet". Gro-Blocks™ comes in strips labeled with instructions. Big Mama and Hugo are sold individually with instructions on the... Read More
$9.95 each
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GRODAN - Gro Blocks - 4" x 4" x 4" (144 blocks)

Grodan: Blocks are easy to saturate and water is distributed uniformly throughout the entire block, resulting is vigorous plant growth. Due to the variations in the small and large pores, the roots are always guaranteed a sufficient supply of air and water. Excellent root growth throughout the block is ensured due to the uniform distribution of water and nutrients. The firmness of GRODAN Delta blocks ensures stability during the propagation process as they are spaced and picked up... Read More
$206.82 each
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Grodan Macroplugs 50/unit

These 1" plugs are cut down the side for easy insertion of any cutting and are sized to fit snugly into the top hole of all other Grodan cubes.... Read More
$13.95 each
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Grodan GroWool (loose) - 45lb

If you’re growing water hungry plants in containers then Gro-Wool is a good idea. Gro-Wool can support house plants while watering just once every 2 to 4 weeks. When growing in clay pellets mix in Gro-Wool to make water and nutrient distribution more uniform and have a moisture buffer in case the pump fails. Gro-Wool also promotes fine root growth which leads to larger more vigorous growth. TIP: If you are using a drain-to-waste system, then you do not need to pH condition the... Read More
$80.95 each
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Grodan Grow-Cubes 0.4" 150L/Case

Grow-Cubes are small 1/4” cubes of stonewool (Rockwool). There are several advantages; Grow-Cubes stack on top of each other leaving air space in between them this promotes root growth. Each cube has four surfaces from which excess water can drain. This way, even if you water a lot, the Grow-Cubes will not get water logged. You have less algae growth on the top than with the smooth surface Gro-Blocks™. The Grow-Cubes are the driest of our products with properties of a 50/50 mix.... Read More
$104.30 each
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Grodan Uni-Slab

If your time is limited and you wish to simply hand water twice a week or if you have never used a GRO-SLAB™ and want to experiment with a small one first, then the UNI-SLAB™ is for you. The UNI-SLAB offers a low-maintenance, simple way for growers to have fresh herbs, healthy greens or one larger plant in a small area. By keeping the wrapping on the rockwool, nutrients and moisture last longer by slowing the evaporation process. The best part of the UNI-SLAB is that it is self... Read More
$6.75 each
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Grodan Gro Blocks 6" x 6" x 4" - Hugo

Hugo is large enough to grow out most vegetables and some fruits for the entire life span of the plant.  Hugo’s holes are the perfect size for any 1.5” A-OK starter plug or Macroplug. When your starter has outgrown its home, showing three leaves, or roots reaching one 1” below the cube, Hugo is happy to receive the transplant. Hugo is sold individually with instructions on the wrapping.  Hand water or use with drippers or in Ebb & Flow (Flood) systems.... Read More
$3.80 each
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Grodan Gro Blocks 6" x 6" x 4" - Hugo (48 Blocks)

Hugo is large enough to grow out most vegetables and some fruits for the entire life span of the plant.  Hugo’s holes are the perfect size for any 1.5” A-OK starter plug or Macroplug. When your starter has outgrown its home, showing three leaves, or roots reaching one 1” below the cube, Hugo is happy to receive the transplant. Hugo is sold individually with instructions on the wrapping.  Hand water or use with drippers or in Ebb & Flow (Flood) systems.... Read More
$182.33 each
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Grodan Gro Blocks 8" x 8" x 8" - Big Mama

Big Mama is made for growing the largest plants and even small trees. If you want to grow a mother plant or just want to make a statement she will make you proud. Big Mama does not have pre-drilled holes because we recommend she be used in conjunction with a well rooted plant from a minimum 3” Gro-Block. Big Mama is sold individually with instructions on the wrapping. Big Mama DOES REQUIRE top feeding, so either hand water or use drippers.... Read More
$8.42 each
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Grodan Grow Cubes (28.3L)

Grow-Cubes are small 1/4” cubes of stone wool (stone wool). There are several advantages: Grow-Cubes stack on top of each other leaving air space in between them this promotes root growth. Each cube has four surfaces from which excess water can drain. This way, even if you water a lot, the Grow-Cubes will not get water logged. You have less algae growth on the top than with the smooth surface Gro-Blocks™. The Grow-Cubes are the driest of our products with properties of a 50/50 mix.... Read More
$32.60 each
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