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K-L-N Concentrateâ„¢ is a rooting solution containing both IBA and NAA hormones to promote vigorous root growth in trees, foliage and flowering plants. Use it for propagating cuttings, air layering and as a transplanting drench for newly potted plants. Drench, dip or mist your plants to simulate new root growth. Growers highly recommend K-L-N to increase production of cuttings.