Grodan
Grodan® Stone Wool Growing Media Solutions
Grodan is a horticultural brand specializing in stone wool growing media designed for precision growing environments. Built to support consistent water distribution, strong root development, and controlled nutrient management, Grodan substrates help growers achieve reliable performance and repeatable results across modern cultivation systems.
Grodan® A-OK Starter Plugs™
- Stone wool plugs for seed starting and rooting plant cuttings.
- Square plugs connected in a sheet to fit a 1020 tray.
- Crafted for convenience, efficiency and reliability.
- Uniform density, firmness, and fibrous structure.
- Enables balanced water and nutrient distribution.
- Available wrapped or unwrapped.
Grodan® Improved Gro-Slabs™
- Advanced Wetting Agent ensures more uniform water distribution throughout the slab.
- Enable a multi-faceted irrigation strategy with water volume variations between 55% and 78%.
- Enhanced capillary action retains moisture more evenly across the entire slab.
- Distributes WC and EC evenly, providing optimal steering capabilities.
- Growers gain better control of plant balance throughout the crop cycle with precise WC and EC adjustments.
- Stone wool fibers do not bind nutrients and eliminate the need for flushing at the start of cultivation.
- Initial targeted water and nutrient application promotes sustainable water and fertilizer use.
- Facilitate optimal crop steering for healthy plants and higher yields.
- Some options include pre-cut plant holes.
Grodan® Improved Gro-Block™ Hugo
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
Grodan® Improved Gro-Blocks™
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
Grodan® A-OK Starter Plug Pre-Filled Trays
The Grodan® tray comes prefilled with A-OK Starter Plugs™ for fast and easy propagation from seeds or cuttings prior to transplanting to Gro-Blocks™.
- Fits perfectly in most standard 1020 trays.
- Designed with a unique and convenient thumb slot to make removal easy and comfortable.
- Pre-cut and pre-filled into an insert of 50 1.5-inch AO plugs (1.4 x 1.4 x 1.9 inches).
- 30 inserts per carton (total of 1,500 plugs).
Grodan Improved Mini-Block MM 50/40, 2 x 2 x 2 in (5 x 5 x 5 cm), Wrapped (1,440 / case)
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 2 x 2 x 2 in (5 x 5 x 5 cm) mini block.
Grodan Gro-Wool Absorbent Granulate 45 lbs (20 kg) (1 each)
- Ideal for both facilities and home hobby growers.
- It supports productive indoor gardens using container systems.
- Can be used as a stand-alone loose fill growing media.
- Can also be mixed with Grodan Grow-Chunks.
Grodan Pargro Slab, 36 x 6 x 4 in (91.4 x 15 x 10 cm) (Bag)
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 36 x 6 x 4 in (91.4 x 15 x 10 cm) slab.
Grodan Gro-Block Improved GR10 Large, 4 x 4 x 4 in (10 x 10 x 10 cm), Loose Pallet (1,548 / skid)
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 4 x 4 x 4 (10 x 10 x 10 cm) block.
Grodan Gro-Slab Expert, 8 x 3 x 36 in (20 x 7.5 x 90 cm) (12 / case)
- Used for final stage planting with growing blocks.
- Recommended for large, long-term crops with extensive roots like peppers, tomatoes, or cucumbers.
- Known for its fast drainage due to vertical fibers, popular among hydroponic hobbyists.
- Features a special wet/dry design with a thicker top layer that stays wetter and a bottom layer that remains drier, ensuring even moisture distribution.
- Come in UV-resistant poly sleeves for ease of use.
- 8 x 3 x 36 in (20 x 7.5 x 90 cm) slab.
Grodan Gro-Block Improved GR6.5 Small, 4 x 4 x 2.5 in (10 x 10 x 6.5 cm) w/ Hole, Loose on Pallet
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 4 x 4 x 2.5 in (10 x 10 x 6.5 cm) block.
- Loose on pallet.
Grodan Gro-Block Improved GR22.5 Jumbo, 6x6x4 in (15x15x10 cm) w/ Hole, Loose on Pallet (704 pcs)
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 6 x 6 x 4 in (15 x 15 x 10 cm) block.
- Loose on pallet.
Grodan Pargro PAR32 Biggie, 6 x 6 x 6 in (15 x 15 x 15 cm) w/ Hole, Loose Blocks on Pallet
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 6 x 6 x 6 in (15 x 15 x 15 cm) block.
Grodan A-OK Improved 1.5 in (36 mm) Starter Plugs, Loose in Carton (2,310 plugs)
Grodan® A-OK Improved Starter Plugs™ for starting seeds and rooting of cuttings prior to plugging into the larger Gro-Blocks™. The plugs come loose in a carton for those who prefer to saturate individually.
- Easy to use with propagation trays.
- Shipped as individual loose AO plugs (1.4x1.4x1.6) bulk in the carton (2,310).
- No shrink-wrap.
Grodan Pre-Cut, Pre-Filled Tray, A-OK 1.5 in Starter Plugs, No Wrap (50 plugs/tray, 30 trays/case)
The Grodan® tray comes prefilled with A-OK Starter Plugs™ for fast and easy propagation from seeds or cuttings prior to transplanting to Gro-Blocks™.
- Fits perfectly in most standard 1020 trays.
- Designed with a unique and convenient thumb slot to make removal easy and comfortable.
- Pre-cut and pre-filled into an insert of 50 1.5-inch AO plugs (1.4 x 1.4 x 1.9 inches).
- 30 inserts per carton (total of 1,500 plugs).
- No wrap.
Grodan Improved Gro-Slab, 6 x 4 x 36 in (15 x 10 x 91.4 cm) w/ Three 4 in Pre-Cut Squares (Bag)
- Advanced Wetting Agent ensures more uniform water distribution throughout the slab.
- Enable a multi-faceted irrigation strategy with water volume variations between 55% and 78%.
- Enhanced capillary action retains moisture more evenly across the entire slab.
- Distributes WC and EC evenly, providing optimal steering capabilities.
- Growers gain better control of plant balance throughout the crop cycle with precise WC and EC adjustments.
- Stone wool fibers do not bind nutrients and eliminate the need for flushing at the start of cultivation.
- Initial targeted water and nutrient application promotes sustainable water and fertilizer use.
- Facilitate optimal crop steering for healthy plants and higher yields.
- 6 x 4 x 36 in (15 x 10 x 91.4 cm) slab.
- Features three 4 inch (10 cm) pre-cut squares.
Grodan Improved Gro-Slab, 6x3x36 in w/Three 4 in Pre-Cut Squares, Bag (12/Bundle, 10 Bales/Pallet)
- Advanced Wetting Agent ensures more uniform water distribution throughout the slab.
- Enable a multi-faceted irrigation strategy with water volume variations between 55% and 78%.
- Enhanced capillary action retains moisture more evenly across the entire slab.
- Distributes WC and EC evenly, providing optimal steering capabilities.
- Growers gain better control of plant balance throughout the crop cycle with precise WC and EC adjustments.
- Stone wool fibers do not bind nutrients and eliminate the need for flushing at the start of cultivation.
- Initial targeted water and nutrient application promotes sustainable water and fertilizer use.
- Facilitate optimal crop steering for healthy plants and higher yields.
- 6 x 3 x 36 in (15 x 7.6 x 91.4 cm) slab.
- Features three 4 inch (10 cm) pre-cut squares.
Grodan Improved Gro-Slab, 12 x 3 x 36 in (30.5 x 7.6 x 91.4 cm) w/ Three 6 in Pre-Cut Squares (Bag)
- Advanced Wetting Agent ensures more uniform water distribution throughout the slab.
- Enable a multi-faceted irrigation strategy with water volume variations between 55% and 78%.
- Enhanced capillary action retains moisture more evenly across the entire slab.
- Distributes WC and EC evenly, providing optimal steering capabilities.
- Growers gain better control of plant balance throughout the crop cycle with precise WC and EC adjustments.
- Stone wool fibers do not bind nutrients and eliminate the need for flushing at the start of cultivation.
- Initial targeted water and nutrient application promotes sustainable water and fertilizer use.
- Facilitate optimal crop steering for healthy plants and higher yields.
- 12 x 3 x 36 in (30.5 x 7.6 x 91.4 cm) slab.
- Features three 6 inch (15 cm) pre-cut squares.
Grodan Pargro Slab, 36 x 8 x 3 in (91.4 x 20 x 7.6 cm) (Bag)
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 36 x 8 x 3 in (91.4 x 20 x 7.6 cm) slab.
Grodan Pargro Slab, 36 x 6 x 3 in (91.4 x 15 x 7.6 cm) w/ Three 4 in Pre-Cut Squares (Bag)
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 36 x 6 x 3 in (91.4 x 15 x 7.6 cm) slab.
- Features three 4 inch (10 cm) pre-cut squares.
Grodan 1.5 in Pargro Plugs, 1.4 x 1.4 x 1.6 in (3.5 x 3.5 x 4 cm), Unwrapped Sheets in Carton
- Grodan® 1.5 inch Pargro® rockwool plugs.
- Dimensions: 1.4 x 1.4 x 1.6 in (3.5 x 3.5 x 4 cm).
- Unwrapped sheets in carton.
Grodan Pargro PAR22.5 Jumbo, 6 x 6 x 4 in (15 x 15 x 10 cm) w/ Hole, Loose Blocks in Carton
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 6 x 6 x 4 in (15 x 15 x 10 cm) block.
Grodan Gro-Block Improved GR7.5 Medium, 4 x 4 x 3 in (10 x 10 x 7.5 cm) w/ Hole, Unwrapped in Carton
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 4 x 4 x 3 in (10 x 10 x 7.5 cm) block.
- Unwrapped strips in carton.
Grodan Improved Gro-Block GR32 Hugo, 6 x 6 x 6 in (15 x 15 x 15 cm), Loose Pallet (512 / skid)
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 6 x 6 x 6 in (15 x 15 x 15 cm) block.
Grodan A-OK 50/40 2 in (50 mm) Starter Plugs, Wrapped (50/Sheet, 30 / case)
- Stone wool plugs for seed starting and rooting plant cuttings.
- Square plugs connected in a sheet to fit a 1020 tray.
- Crafted for convenience, efficiency and reliability.
- Uniform density, firmness, and fibrous structure.
- Enables balanced water and nutrient distribution.
- 2 inch (50 mm) plugs.
- 50 plugs per sheet.
- Wrapped.
Note: Item Q100445 supplied without shrink wrap.
Grodan Improved Mini-Block MM 40/40, 1.5 x 1.5 x 1.5 in (4 x 4 x 4 cm), No Wrap (2,250 / case)
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 1.5 x 1.5 x 1.5 in (4 x 4 x 4 cm) mini block.
Grodan Improved Mini-Block MM 40/40, 1.5 x 1.5 x 1.5 in (4 x 4 x 4 cm), Wrapped (2,250 / case)
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 1.5 x 1.5 x 1.5 in (4 x 4 x 4 cm) mini block.
Grodan Gro-Block Improved Big Mama, 8 x 8 x 8 in (20 x 20 x 20 cm), No Hole (18 / case)
- Formulated with an advanced wetting agent and optimized wool structure.
- Grodan's largest Gro-Block.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 8 inch (20 cm) block.
Grodan Grow-Chunks, 3/4 inch (2 cu ft bag) (3 bags / case)
- Grodan® Grow-Chunks are a larger-size 3/4 inch alternative to Grodan 1/2 inch Grow-Cubes.
- Designed to offer increased moisture and nutrient retention.
Grodan Improved Gro-Block GR22.5 Jumbo, 6 x 6 x 4 in (15 x 15 x 10 cm), With Hole (64 / case)
- Formulated with an advanced wetting agent and optimized wool structure.
- Optimal fiber structure and physical properties ensure crop uniformity.
- Even WC and EC distribution.
- Greatest steering capabilities available.
- Efficient substrate volume use.
- Promotes well-defined root system with higher capacity for water and nutrient uptake.
- Consistent and outstanding results for controlled-environment indoor and greenhouse commercial grows.
- 6 x 6 x 4 in (15 x 15 x 10 cm) block.
Grodan Improved Gro-Slab, 8 x 3 x 36 in (20 x 7.6 x 91.4 cm) w/ Three 4 in Pre-Cut Squares (Bag)
- Advanced Wetting Agent ensures more uniform water distribution throughout the slab.
- Enable a multi-faceted irrigation strategy with water volume variations between 55% and 78%.
- Enhanced capillary action retains moisture more evenly across the entire slab.
- Distributes WC and EC evenly, providing optimal steering capabilities.
- Growers gain better control of plant balance throughout the crop cycle with precise WC and EC adjustments.
- Stone wool fibers do not bind nutrients and eliminate the need for flushing at the start of cultivation.
- Initial targeted water and nutrient application promotes sustainable water and fertilizer use.
- Facilitate optimal crop steering for healthy plants and higher yields.
- 8 x 3 x 36 in (20 x 7.6 x 91.4 cm) slab.
- Features three 4 inch (10 cm) pre-cut squares.
Grodan Pargro Slab, 36 x 8 x 3 in (91.4 x 20 x 7.6 cm) w/ Three 4 in Pre-Cut Squares (Bag)
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 36 x 8 x 3 in (91.4 x 20 x 7.6 cm) slab.
- Features three 4 inch (10 cm) pre-cut squares.
Grodan Pargro Slab, 36 x 6 x 3 in (91.4 x 15 x 7.6 cm) (Bag)
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 36 x 6 x 3 in (91.4 x 15 x 7.6 cm) slab.
Grodan Pargro Slab, 36 x 6 x 4 in (91.4 x 15 x 10 cm) w/ Three 4 in Pre-Cut Squares (Bag)
- Pargro® offers Grodan®'s industry-leading stone wool growing media.
- Ideal for indoor growers using low to medium levels of technology.
- Designed for those transitioning from soil, coco, or peat.
- Increases crop cycles per year, saving time and money.
- A perfect solution for transforming your growing experience.
- 36 x 6 x 4 in (91.4 x 15 x 10 cm) slab.
- Features three 4 inch (10 cm) pre-cut squares.