The Viagrow coconut coir seedling starter plugs are perfect for starting your seedlings or rooting clones. The Viagrow coir seedling cubes maintain an excellent air-to-water ratio and are easy to transport and transplant. Seedling starter plugs are composed of premium triple-washed Coir, which is all-natural, sustainable, and biodegradable. Wet the coir seedling starter discs and watch them expand. Once they have expanded make a hole for your seedling or clone and add the seed or clone. Each coir seedling starter disc is approximately 50mm / 2 inches wide x 75mm / 3 inches tall. For related cloning and seedling trays and domes search for these items – VTD300, VSFB900, VSEEDMAT, V1020SL, and VSSP100. Put the Viagrow coco coir plugs in the planting tray. Soak the Viagrow coco coir plugs with lukewarm water, and pour off any excess water. (pH should be between 6-7, and the temperature should be warmer than 70-80 degrees) A seedling heat mat may be needed, please search code VSEEDMAT. Sow seeds or stick cuttings and position the tray in a bright place or position under a propagation grow light When the seeds have sprouted, turn the air vents to the open position for small air circulation. When the seedlings have sprouted and shown the second set of leaves, take the humidity dome off.