Rhipsalis pachyptera Pfeiff.
Hariota robusta, Hariota triquetra, Rhipsalis robusta, Rhipsalis dusenii, Hariota pachyptera, Cactus alatus
Rhipsalis pachyptera is an epiphytic cactus with semi-erect to somewhat pendent, freely branched, spineless stems that grow up to 5 feet (1.5 m) long. The stems are robust, with many wide, leaf-like joints often referred to as leaves. The joints are flattened, elliptic, green, and sometimes tinged with red. It is an outstanding species that often develop many buds at one areole. Flowers are creamy-yellow or whitish, up to 0.6 inches (1.5 cm) long and up to 1 inch (2.5 cm) in diameter. They are followed by many white fruits, often pinkish or reddish, when immature.
USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).
How to Grow and Care
Rhipsalis do not thrive in direct sunlight. Exposure to the afternoon sun can burn the leaves, turn them yellow or lead to spotting. However, without sufficient sunlight, they will not bloom, and their growth can be stunted. Therefore, these cacti do best with morning sun and full shade in the afternoon.
As Rhipsalis is commonly grown indoors, care must be given to the placement of the plants. They should be kept at least 20 inches (50 cm) away from windows that receive midday or afternoon sun. The glass in the windows can multiply the heat from the sun's rays, causing sunburned leaves. Keep in mind that in its native environment, Rhipsalis is accustomed to receiving light that has been filtered through dense, overhanging tree branches. Picturing this environment can help you adjust your lighting accordingly.
Rhipsalis is not a drought-resistant plant, so regular watering is essential. Overwatering, however, can cause weak stems and rotted roots. Using a watering can help you measure the amount of water you are providing. The pot's size compared to the plant's size, the humidity levels in the home, and the type of potting soil used can all affect the watering frequency.
Learn more at How to Grow and Care for Rhipsalis.
This species is native to Brazil (Paraná, Rio de Janeiro, Santa Catarina, and São Paulo).
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