Water them sparingly, as overwatering can lead to root rot. #6. Yucca Cactus (Yucca) Yuccas are perennial plants with striking sword-like leaves and tall flowering stalks. They are well-suited for outdoor gardens, as they are hardy and drought-tolerant. Yuccas prefer full sun and well-draining soil. Caring for Houseplants. Caring for houseplants the right way is just as important as picking the right one. With a little preparation and some care, you can learn how to take care of your house plants and keep them looking beautiful. If you notice problems, use our helpful tips on houseplant care to solve them before they get serious. Desert cacti, unlike many other plants, do not require a lot of water. If your grafted cacti are dry, you should only water them once. Misting your grafted cacti on a regular basis can also help keep them vibrant. These colorful plants are unable to produce their own food because they lack chlorophyll. In spring through summer, water the plant when the soil is dry to the touch. Make sure any saucer you have is emptied of water to prevent root rot. Another important part of Huernia cactus care is temperature. If you are growing the plant outside, it should be moved indoors if temperatures drop to 50 degrees F. (10 C.). Rainbow Cactus Water Needs. During the growing season, water your cactus thoroughly, and then let the soil dry out before watering it again. It is best to err on the side of underwatering for rainbow cactus, since it is susceptible to root rot if soil is too moist. Test the soil with your fingers or a soil probe halfway down the pot or in the Christmas Cactus (aka Holiday & Thanksgiving Cactus) is a very popular blooming plant for the holidays. It's a long lasting, easy care houseplant you can hav Simply cut off a piece of the stem and let it dry for a few days. Then replant the stem cuttings in a pot with well-draining soil or a cactus soil mix. Provide full sun. Since rat tail cacti are native to USDA Hardiness Zones 9–11, you can try to place your plant in full sunlight to imitate these dry desert conditions. Best temperature for a Christmas Cactus: The right temperature is important if you want a Christmas cactus to produce flowers. To set the flower buds, the plant needs cool temperatures between 60°-65°F (16°-18°C) during the day and even cooler temperatures between 45°-55°F (7°-13°C) at night. Once buds have developed, provide warm Make sure the soil is dry before you begin repotting. Gently remove the plant from the pot, and knock off excess soil. Trim off any roots that look shriveled and dead or black and rotten. Then, put the pencil cactus in its new pot, and fill around it with fresh potting mix. Wait about a week before watering the plant. The unusual appearance of the plant is set off by simple container forms that accent the lovely, pencil-thin stems. Happy rat tail cactus can get 6 feet (2 m.) in length. Trim excess growth and use pruned stems to start new cactus. Growing Rat Tail Cactus. Rat tail cactus houseplants require bright light even during their dormant period. asLZ.