Pseudorhipsalis Ramulosa, Red Mistletoe Cactus

The Pseudorhipsalis ramulosa, also known as the Red Mistletoe Cactus, is an epiphytic cactus native to the tropical rainforests of Central and South America. Unlike its desert relatives, this cactus has flat, ribbon-like stems and thrives in humid environments with indirect light.

Here’s a guide to caring for your Pseudorhipsalis Ramulosa, Red Mistletoe Cactus:  

Light

• Prefers bright, indirect light, mimicking its natural under-canopy habitat.   
• Can tolerate some shade, but insufficient light may hinder blooming and stunt growth.   
• Morning sun is acceptable and can encourage a deeper red coloration in the stems.   
• Avoid direct afternoon sun, which can scorch the stems and cause them to turn yellow or develop spots.   
• If growing indoors near a window, keep the plant about 50 cm away from the glass to prevent scorching.

Watering

• Water regularly during the growing season (spring and summer), allowing the top 1-2 inches of soil to dry out slightly between waterings.   
• Reduce watering in the fall and winter when the plant’s growth slows down.
• Ensure the pot has good drainage to prevent waterlogging and root rot, which is a common issue for epiphytic cacti.   
• If the stems appear shriveled or limp, the plant may need more water. Increase frequency, but still allow the soil to dry slightly between waterings.   

Humidity

• Prefers moderate to high humidity (50% or more), reflecting its tropical origins.
• If the air is dry, increase humidity by misting the plant occasionally, using a humidifier, or placing the pot on a pebble tray with water.   
• Crispy or brown stem tips can indicate low humidity.   

Temperature

• Ideal temperatures during the growing season are between 18-24°C (64-75°F).
• Can tolerate cooler temperatures in winter, down to around 10°C (50°F).   
• Protect the plant from drafts and sudden temperature changes.   
  

Soil

• Requires a well-draining potting mix. An orchid mix or a cactus mix amended with perlite or bark is suitable to ensure good aeration for the roots.   
• Avoid dense, heavy soils that retain too much moisture.

Fertilizer

• Feed lightly with a balanced liquid fertilizer diluted to half strength once a month during the growing season.   
• A fertilizer low in nitrogen and higher in potassium and phosphorus is recommended.
• You may not need to fertilize if you repot annually with fresh potting mix.

Propagation

• Easily propagated from stem cuttings during spring or summer.   
• Allow the cuttings to callus over for a few days before planting them in a well-draining potting mix.   
• Cuttings can also be rooted in water before planting in soil.

Repotting

• Repot every 2-3 years or when the plant becomes root-bound, typically in the spring.
• Use a pot with good drainage. Hanging baskets are particularly suitable for its trailing growth habit.   

Common Issues

• Overwatering: Can lead to root rot and stem rot, characterized by mushy, discolored stems. Reduce watering and ensure good drainage. Remove any affected parts with sterilized tools.
• Underwatering: Can cause stems to become shriveled and limp. Increase watering frequency, allowing the soil to dry slightly between waterings.   
• Insufficient Light: May result in thin, pale stems (etiolation) and a lack of flowering or vibrant red coloration. Move the plant to a brighter location with indirect light.
• Pests: Generally low maintenance regarding pests, but watch out for spider mites and mealybugs. Treat any infestations with appropriate methods like neem oil.   
  

By providing the right conditions, your Pseudorhipsalis Ramulosa, Red Mistletoe Cactus will thrive, displaying its unique trailing stems, occasional delicate flowers, and potentially beautiful red hues.