StimRoot #1 is ideal for softwood cuttings and easy to propagate plants such as African Violet, Cannabis, Carnation, Chrysanthemum, Coleus, Dahlia, Fuchsia, Hydrangea, Ivy, Geranium, and Poinsettia.

StimRoot #2 is ideal for rooting semi-hardwood plants, and easy to propagate evergreens such as Berberis, Briar, Euonymus, Clematis, Cydonia, Currant, Spiraea, Gooseberry, Dogwood, Rubber Plant, and Viburnum.

StimRoot #3 is ideal for rooting hardwood plants and difficult to propagate plants such as evergreens and dormant leafless cuttings; Azalea, Boxwood, Camelia, Apple (Malus), Daphne, Juniper, Holly, Lilac, Taxus, Yew, Wisteria, and Privet.