Grodan Improved Jumbo, 6 x 6 x 4, with hole, case of 64 hydro-logic For organic gardening

For organic gardening

SUPERthrive®is a highly concentrated non-toxic vitamin solution invigorating all variety of greenery for home gardeners and professionals alike

This allows your plants to achieve a balance between respiration and photosynthesis in high intensity growing environments where the rate of respiration can sometimes exceed the rate of photosynthesis

Rubber-backed exterior

and forces you to flush thoroughly before harvest -- it wastes time AND money

Grodan Improved Jumbo, 6 x 6 x 4, with hole, case of 64 hydro-logic For organic gardeningGrodan Improved Jumbo (White Foil) 6 x 6 x 4 (Case of 64) Grodan Improved Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for specialty crops. The result of months of scientific research and trials is Grodan Gro Blocks Improved with our Advanced Wetting Agent. These leading edge blocks have the