Grafting is a method of propagating species at risk of surviving by attaching part of another plant that is more tolerant to the environmental conditions. The grafted part adds qualities that help the plant survive. This kit includes two types of cacti; half of one can be grafted onto half of the other (the same can be done with the remaining halves) and the plants will continue to grow. It comes with all necessary materials and instructions. The cacti are supplied in pots.