The Viagrow Coconut coir seedling starter plugs are perfect for starting your seedlings or rooting clones. The Viagrow coir seedling cubes maintain a perfect 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. Simply 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, VSSP100. Put the Viagrow coco coir plugs in the planting tray. Soak the Viagrow coco coir plugs with lukewarm water, pour off any excess water. (pH should be between 6-7, temperature should be warmer 70-80 degrees) 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 slight air circulation. When the seedlings have sprouted and show second set of leaves, take the humidity dome off.