I know that willow bark is one example of many sources (organic and inorganic) of certain growth-hormones that promote root growth and can be used for cloning, but how do these hormones affect a plant that either started from seed or was cloned but had already build an extensive root system? Do they promote vigorous root growth on any vegetative plant, or just unrooted cuttings?
not sure if anyone has any reliable source of such information, but I'm curious so I thought I'd ask.
not sure if anyone has any reliable source of such information, but I'm curious so I thought I'd ask.