I've used Superthrive for 20 years on my CP. It is only to be used in transplanting or dividing plants. It does incredibly well on stopping shock in its tracks, and stimulates the plant to produce roots. No more, no less. Plants that have never had it before do show added vigor from its use, but they get used to it and that stuff stops. Use only in transplanting, and dividing plants, and your plants will perk up and actually grow faster for a short while. Tamlin, snake oil it's not, but it is always wise to stay on the side of caution when unsure about a product or its use.