Grodan Rockwool MACROPLUGS™ are round and have a slit that allows for easy insertion of a cutting or bare-root plant. These plugs also fit perfectly into Grodan GRO-BLOCKS™
For best results with these MACROPLUGS™, always insert them in the Grodan GRO-SMART™ tray. The individual cells will make sure that the plugs stay closed around the stem of your cutting.
Try out our MACROPLUGS™ today and see what you have been missing!
MACROPLUGS™ come in convenient 50-count bags.
Grodan Rockwool is an excellent quality stonewool substrate with a very high water holding capacity. Rockwool is absolutely free of disease, salts, and weed seeds. It has no Cation Exchange Capacity (CEC) so growers can take advantage of a nutritional program specifically tailored to their choice of crop.