Grodan Gro-Block Improved GR5.6 Large with Hole, 3" x 3" x 4" - Case of 256 Select Rockwool Type:GR22 Jumbo w/ Hole 6"x6"x4" - Case of 64 Ful-Humix prevents the tie up

Ful-Humix prevents the tie up of nutrients and trace elements through chelation and complexing

The plant and planet healthy solution you have been looking for

If applying as foliar

Repeat application 2-3 times 10 days apart

Black Spot of roses (Diplocarpon rosae)

Grodan Gro-Block Improved GR5.6 Large with Hole, 3" x 3" x 4" - Case of 256 Select Rockwool Type:GR22 Jumbo w/ Hole 6"x6"x4" - Case of 64 Ful-Humix prevents the tie upNew and improved stone wool substrate with advanced wetting technology from Grodan Introducing Grodan Gro Blocks Improved, a product specifically engineered to deliver real results for your crops, developed by plant scientists, researchers, and top growers. A core component of the "Precision Growing" philosophy, Grodan Gro Blocks Improved with Advanced Wetting Technology allow you to cultivate more uniform and high quality crops while using less water