Air layering is an effective method of propagation, and now, with Rooter-Pots, you can easily and quickly produce large new plants from prized specimens. Brilliant design maintains vital moisture and controls humidity while the parent plant puts out new roots into the growing medium within the Rooter-Pot. Within 2-4 months, you will have a nice-sized new plant on its own roots, ready to be grown on without transplanting shock. Made from durable plastic and can be re-used time after time for many years. The Baby Rooter Pot is 3-1/4" dia x 4" deep. Use this size for stems 1/4" - .5" in diameter. The Large Rooter Pot is 5" dia x 6-1/4" ht. Use this size for stems .5" - 1" in diameter.