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.
Featured products
Grodan® Improved Gro-Slabs™
P_00206
- 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
P_00207
- 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™
P_00205
- 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
P_00696
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 Gro-Block Improved GR10 Large, 4 x 4 x 4 in (10 x 10 x 10 cm), Loose Pallet (1,548 / skid)
Q102203
- 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 Improved Gro-Slab, 12 x 3 x 36 in (30.5 x 7.6 x 91.4 cm) (8 / case)
Q102201
- 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.
Grodan Gro-Block Improved GR40 Uni-Block, 8x8x4 in (20x20x10 cm) No Hole (36 / case, 432 / pallet)
Q100449
- Features an advanced wetting agent and optimized wool structure.
- New density and hydrophilic technology enhance water distribution and root development.
- Delivers consistent results for controlled environment indoor and greenhouse commercial grows.
- Offers optimal fiber structure for crop uniformity and even water content (WC) and electrical conductivity (EC) distribution.
- Provides exceptional steering capabilities for efficient and sustainable use of substrate volume.
- Promotes a well-defined root system with higher water and nutrient uptake capacities.
- Dimensions: 8 x 8 x 4 in (20 x 20 x 10 cm).
Grodan A-OK Starter Plugs 50/40 - 2" (5 cm) (50 / Sheet) No Wrap (30 / Case)
Q100445
- A-OK Starter Plugs™ are designed for starting seeds and rooting cuttings.
- Square 2-inch (50 mm) plugs are connected in a sheet fitting a 1020 tray.
- Grodan stone wool products provide consistency and reliability for propagation.
- A-OK Plugs offer uniform density, firmness, and fibrous structure.
- Supports both manual and mechanical processing.
- Ensures balanced water and nutrient distribution for optimal rooting.
- Ideal for both seasoned growers and beginners.
- Dimensions: 2 in (50 mm).
Grodan A-OK 1" (2.5 cm) Starter Plugs 25/40 (200 / sheet) No Wrap (30 / case)
Q102194
- 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.
- 1 inch (25 mm) plugs.
- 200 plugs per sheet.
- No 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)
Q102184
- 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)
Q102195
- 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 Improved Gro-Block GR4 Small, 3 x 3 x 2.5 in (7.5 x 7.5 x 6.5 cm), No Wrap (384 / case)
Q102187
- 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.
- 3 x 3 x 2.5 in (7.5 x 7.5 x 6.5 cm) block.