Rhipsalis neves-armondii K.Schum.
Rhipsalis rhombea is a much-branched cactus with pendent stems that grow in segments and branch in whorls of 3 to 10, forming large clusters. The stems grow to 6.6 feet (2 m) long or more. Branches are deep green, naked, perfectly cylindrical, usually about 4 inches (10 cm) long and 0.2 inches (0.5 cm) in diameter. The woolly areoles are visible only after flowering.
The flowers are white to cream-colored, widely spreading, and up to 0.8 inches (2 cm) in diameter, and appear from the hidden terminal areoles in late winter and early spring. Fruits are red, globose, up to 0.4 inches (1 cm) in diameter, and with tiny brown seeds inside.
Rhipsalis neves-armondii is native to Brazil. It grows as an epiphyte or epilith in the Atlantic Forest at elevations of up to 3,280 feet (1,000 m).
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, they will not bloom without sufficient sunlight, 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 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. A watering can help you measure the amount of water you are providing. The size of the pot compared to the size of the plant, the humidity levels in the home, and the type of potting soil used can all affect the watering frequency.
See more at How to Grow and Care for Rhipsalis.
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