Small rockwool starter plugs for propagation

This set of starter plugs is made from rockwool, a material created by spinning molten rock into fine fibers. These fibers are then compressed into cubes that provide an ideal environment for seed germination. The structure of the material allows for a high level of water retention while still maintaining necessary air pockets for root health.

The listing includes a single sheet containing 28 individual plugs, each measuring 1.5 inches. This size is standard for most propagation trays and fits easily into larger hydroponic systems once the seedlings have established a root base. The plugs are uniform in shape, which helps in maintaining consistent moisture levels across all your starts.

Using these cubes simplifies the process of moving plants from the germination phase to the growing phase. Because the material is inert, it does not interfere with the nutrient balance of your water solution. These are a staple for growers who prefer to start their plants from seeds or clones before moving them to a permanent system.