Sunlight and Temperature needs
All kalanchoe varieties need ample sunlight. A south facing window in winter is best and the more filtered light from an east or west window in the summer months is preferable.
If your plant starts getting very tall with lots of space between the leaves on the stem, this means that it is reaching for the light and that you should move it so that it gets more sunlight.
Keep the plant away from drafts and not too close to the window itself, particularly in the winter when the glass is very cold. Kalanchoe blossfeldiana is a tropical plant which is very sensitive to cold and can chill easily.
It is best to keep the temperatures near the plant above 50 degrees. The idea temperature range is 65-75 degrees F. This means that if you place your kalanchoe outdoors in the summer months, be sure to bring it indoors before there is a chance that night time temps will drop below this.
Soil and fertilizing needs
Choose a well draining cactus or succulent soil for your kalanchoe houseplant. If you can’t find this, add some sand or perlite to normal potting soil so that the water will drain more efficiently.
When the plant is actively growing and flowering, feed it with an all purpose, well balanced fertilizer that is high in phosphorus (to promote more flowers) every two weeks.
Kalanchoe watering needs
One of the biggest problems that people have when trying to grow kalanchoes (and many succulents) is that they over water them. Water the plant and then allow it to dry out well before you water it again. The plant can easily go 2 weeks before it needs watering again.
Kalanchoe blossfeldiana stores water in its waxy leaves. This is a great way to deal with drought in its native habitat.