Rhipsalis mesembryanthemoides aka Clumpy Mistletoe Cactus

Rhipsalis mesembryanthemoides is a cactus from southeastern Brazil. It is a succulent, a plant that stores water. Its names include clumpy mistletoe cactus and coral cactus. It grows on tree trunks, not in the ground. Its home climate is wet and tropical. LLIFLE reports that plants still grow in public parks around Rio de Janeiro. It lists the species as critically endangered. More plants may die as towns grow warmer and drier. Its first home was most likely lowland forest.

Young plants grow upright, then form arching or hanging stems. The main stems reach about 0.7 feet [0.2 metres] long. Small, stubby branches, called branchlets, cover these thin, round stems. The green branchlets give the plant a dense, coral-like look. The main stems can grow roots at several points. Old stem bases turn woody and grow rough, grey bark. Branchlets leave scars when they fall off. Small areoles, or growth points, may bear short hairs on the branchlets.

Flowers grow one at a time from the short branchlets' sides. Pink buds open in the early morning. Blooms are white or pale pink. Each has five spreading perianth segments, which form its outer parts. Each also has about 20 white stamens and a white style. LLIFLE reports that plants bloom in winter when grown in care. The fruits are small berries, round to a little longer. They look white and almost clear, at times with a red tint. Parts of the flower stay on the fruit. Birds eat the berries and spread the seeds.

Grow this cactus in part shade, with a mix that drains well. Use a loose, acidic mix rich in organic matter. LLIFLE suggests mixes for orchids or other epiphytes, which grow on plants. Give ample water in summer, more than many cacti need. Let the mix dry a little before watering again. Water less in autumn, then at set times once blooms start. Misting now and then can add to watering. Keep the plant a little warm while it blooms. Guard it from frost, cold spells, and high heat. Night temperatures should stay at or above 41°F [5°C].

Its arching stems suit hanging baskets and indoor pots. It adds texture to displays with other succulents. LLIFLE says it grows with ease and can cope with neglect. With the right care, plants can live for many years. Grow new plants from stem cuttings. Bring pots indoors for winter, except in the mildest climates.