Seedling should be large enough to transplant into 2 -inch pots seven weeks from sowing. Most of the better cultivars available in the U.S. today are asexually propagated from terminal cuttings of named cultivars. The vast majority of kalanchoe growers order rooted or unrooted cuttings from specialists propagators. However, some larger growers produce stock plants for a continuous cutting supply. If licensed to do so, cuttings for stock plants can be obtained from a specialists propagator and established in 6-inch or larger pots.
Many growers apply night-break lighting year round as insurance.
Temperatures should be 65 to 68F at night and 72 to 75F during the day with a minimum of 4500 foot-candles of light. Stock plants should be kept free of insects and disease and should never suffer moisture stress. Watering should be done early in the day so that foliage dries before night. Microtube irrigation is strongly recommended. Shoots on stock plants should be pinched or cuttings taken when it is possible to leave two to three leaf pairs on the plants.