Grodan Rockwool/Stonewool Delta Starter Mini-Blocks nutrients-and-supplements stimulate plant growth by increasing

stimulate plant growth by increasing cell division

10 lbs (fills 2 cu ft)

Derived from: Bat Guano

such as its unique patented aluminum housing

Grodan Rockwool/Stonewool Delta Starter Mini-Blocks nutrients-and-supplements stimulate plant growth by increasingMini Blocks sit in a tray (flat) without support for easy starting of seeds and cuttings. These Mini Blocks are individually wrapped in white plastic to minimize algae growth. Remove wrapping and transplant into any loose media such as Grow Cubes or coconut fiber or leave wrapping on and set on top of a larger Gro Block. Packed in easy tear away strips, labeled with instructions.