How To Care For Christmas Cactus Outside. 4 Can you put a Christmas cactus outside in the summer. Keep the cactus almost dry in a cool ambient temperature of around 17 to 20 degrees for about six weeks.
Christmas cactus can be moved outdoors in summer but should be kept in a partial to full shaded area. When they are outside the plants may need to be watered more frequently the general guideline is to water Christmas cacti when the top inch of potting soil feels dry. You can also opt to put the plant inside a box.
The Christmas cactus needs ample humidity especially when grown in the dry conditions of heated homes which is often the case in winter.
Fertilize your Christmas cactus every month in the growing season or from mid spring to early autumn. Feed a Christmas cactus with a 20-20-20 or 10-10-10 plant food diluted with water to 50 strength. Keep the cactus almost dry in a cool ambient temperature of around 17 to 20 degrees for about six weeks. As such they like average temperatures ranging from 65 degrees to 75 degrees.