The Ric Rac Cactus, also known as the Fishbone or Zig Zag Cactus, is a unique epiphyte native to the tropical rainforests of Mexico. Scientifically named Disocactus anguliger, this plant is recognized for its flat, deeply lobed stems that create a distinctive, wave-like pattern. Unlike desert cacti, this species grows on trees in its natural habitat, requiring specialized care. When mature and given the correct environmental signals, the Ric Rac Cactus produces spectacular, fragrant flowers.
Characteristics of the Ric Rac Cactus Bloom
The flowers of the Ric Rac Cactus are large and showy, emerging from the scalloped edges of the stems. These blossoms are typically creamy white to pale yellow, sometimes tinged with pink or reddish hues. The numerous, layered petals give the bloom a striking, almost orchid-like appearance. Blooming generally occurs in the late summer or fall. A defining characteristic is their nocturnal nature, opening fully only after sunset to release a powerful, sweet, and highly fragrant scent. The blooms are relatively short-lived, often closing and fading by the following morning.
The Critical Dormancy Period
To successfully trigger flower production, the Ric Rac Cactus requires a simulated winter resting period lasting six to eight weeks. This period of deliberate stress mimics the cooler, drier conditions of its native habitat and is the most effective way to encourage bud formation.
During this time, the plant needs a significant drop in temperature compared to its summer growing environment. The ideal range is between 50°F and 60°F (10°C to 16°C), which signals the plant to shift its energy toward reproduction. Placing the plant in a cool, unheated room or near a window away from heat sources is often sufficient.
The watering schedule must also be drastically reduced during the cool rest period. Water should only be applied sparingly, allowing the potting mix to dry out completely between irrigations. This dry condition, combined with lower temperatures, forces the plant into dormancy and helps prevent root rot. Fertilizer application must be stopped entirely.
If this cool, dry rest is not provided, the plant will likely continue its vegetative growth instead of producing flower buds. Once the resting period is complete, a gradual return to warmer temperatures and a regular watering schedule will encourage the formation of flower buds in the following months.
Optimal Growing Environment for Flower Production
Outside of the critical dormancy period, the Ric Rac Cactus thrives in conditions that emulate its tropical origins. The plant requires bright, indirect light throughout the day to build up the necessary energy reserves for flowering. Direct, intense sunlight, especially during the afternoon, can quickly scorch the stems, causing them to turn yellow or reddish-brown.
It prefers a well-draining, airy potting mix that mimics the organic matter found in tree crevices. A specialized mix containing orchid bark, perlite, and coco coir is often more suitable than standard potting soil. During the spring and summer active growth period, the soil should be kept lightly moist, allowing the top one to two inches to dry out before watering again.
Since the plant is native to humid environments, it appreciates ambient humidity levels between 40 and 70 percent. Placing the pot on a pebble tray filled with water or using a room humidifier can help maintain sufficient moisture in the surrounding air. During the active growth phase, feeding the plant with a balanced, diluted liquid fertilizer once a month supports robust health. A fertilizer that is lower in nitrogen and higher in phosphorus is beneficial in promoting the development of strong flower buds.