Introduction to Epiphyllum
Epiphyllum, commonly known as Orchid Cactus, is one of the most spectacular and rewarding flowering houseplants you can grow. Unlike desert cacti, Epiphyllums are epiphytic cacti native to the tropical rainforests of Central and South America, where they grow on trees and rocks in dappled shade. They are celebrated for their dramatic, large blooms — some of the most stunning flowers in the plant kingdom — and their unique, flattened, leaf-like stems. The Ric Rac Cactus (Epiphyllum anguliger) is a particularly popular variety, prized for its distinctive zigzag-shaped stems and fragrant nocturnal flowers.
Light Requirements
Epiphyllums thrive in bright, indirect light. Unlike desert cacti, they cannot tolerate harsh direct sunlight, which scorches their delicate stems. An east- or west-facing window is ideal. They can tolerate some morning direct sun but should be protected from intense afternoon light. In lower light, they will grow but may not bloom.
Watering
Water when the top inch of soil feels dry. Epiphyllums need more water than desert cacti but less than typical tropical houseplants. During the growing season (spring and summer), water regularly; in fall and winter, reduce watering to encourage blooming. Always use a pot with drainage holes and never let the plant sit in standing water.
Humidity & Temperature
Epiphyllums prefer moderate to high humidity (50–70%) and temperatures between 50–90°F (10–32°C). They are more cold-tolerant than most tropical plants and actually benefit from a cool winter rest period (50–55°F) to trigger blooming. Protect from frost.
Soil & Potting
Use a well-draining, slightly acidic mix — a blend of cactus mix, orchid bark, and perlite works perfectly. Epiphyllums are epiphytic and need excellent drainage and aeration around their roots. They do well in hanging baskets, which allow their trailing stems to cascade beautifully.
Fertilizing
Feed every 2–4 weeks during spring and summer with a low-nitrogen, high-phosphorus fertilizer to encourage blooming. Avoid fertilizing in fall and winter during the rest period.
Encouraging Blooms
The key to getting Epiphyllums to bloom is a cool, dry winter rest period (reduce watering and keep temperatures around 50–55°F for 6–8 weeks). When temperatures warm in spring and you resume regular watering, the plant will reward you with spectacular blooms!
Shop Our Epiphyllum Collection
- Epiphyllum 'Ric Rac' Cactus — unique zigzag stems with fragrant flowers
- Shark Tooth Orchid Cactus
- Orchid Cactus 'Curly Sue'
Common Problems & Solutions
No blooms: Needs a cool winter rest period — reduce watering and lower temperatures for 6–8 weeks. Shriveled stems: Underwatering — water more regularly during the growing season. Mushy stems: Overwatering or root rot — reduce watering and repot in fresh, well-draining mix. Pale, bleached stems: Too much direct sun — move to bright indirect light.