The Ric Rac Cactus (Epiphyllum anguliger or Selenicereus anthonyanus), also known as Fishbone Cactus or Zig-Zag Cactus, produces captivating blooms. While its unique, lobed stems make it a popular houseplant, its flowers add significant beauty when given proper care.
Understanding Ric Rac Cactus Blooms
The blooms of the Ric Rac Cactus are a stunning display, often appearing in late spring to early summer, or sometimes in the fall depending on the variety and conditions. These flowers are typically large and can range in color from white to creamy, yellow, or even pink, often with a prominent yellow stamen and white pistil. A notable characteristic is their strong, sweet fragrance, which becomes particularly intense at night.
These ephemeral blossoms generally open in the late afternoon or evening and last for only a short period, often just one night, before wilting by morning. This nocturnal blooming habit attracts nighttime pollinators in their native Mexican rainforest habitat. It can take a Ric Rac Cactus at least three years to reach maturity and begin producing these flowers.
Essential Care for Encouraging Blooms
To encourage blooming, provide environmental conditions that mimic the Ric Rac Cactus’s natural rainforest habitat. These conditions support the plant’s energy production and reproductive cycle.
Light Requirements
Bright, indirect light is necessary for flowering. While the plant enjoys ample light, direct sun can scorch its foliage and hinder blooming. Optimal placement is near an east or west-facing window, or a south-facing window with a sheer curtain.
Watering Practices
Proper watering is crucial. The plant thrives when the top inch or two of soil dries out between waterings. During the active growing season (spring and summer), more frequent watering is needed, reducing it in cooler months. Use room temperature water to avoid shocking the roots.
Temperature and Humidity
The Ric Rac Cactus prefers warm, humid conditions, ideally 60-80°F (16-27°C) during active growth. Maintain humidity at 40-60%, mirroring its tropical origins. While average household humidity often suffices, misting or a pebble tray can provide additional moisture.
Fertilization
During the spring and summer growing season, fertilize to support bloom production. Use a low-nitrogen, high-phosphorus or high-potassium fertilizer to encourage flowers over leafy growth. Apply monthly or every few months, diluted to half strength. Cease fertilization in late summer or early fall to prepare the plant for dormancy.
Dormancy Period
A cool, dry dormancy period in late fall and winter is important for stimulating flower bud formation. Maintain temperatures between 50-60°F (10-16°C). Significantly reduce watering, allowing the soil to dry almost completely between applications. This rest period mimics the plant’s natural seasonal cycle and is a key factor for blooming.
Common Reasons for Lack of Blooms
Several factors can prevent blooming. Insufficient light is a frequent culprit, as the plant needs ample bright, indirect light for energy. Improper watering (overwatering leading to root rot or severe underwatering) also inhibits bloom development.
A lack of a distinct dormancy period with cooler temperatures and reduced watering can prevent bud formation. Incorrect fertilization, especially high-nitrogen formulas, promotes foliage growth over flowers. Finally, young plants, typically under three years old, may not have reached maturity to bloom.
Post-Bloom Care
After blooming, adjust care to prepare the plant for future flowering. While not always necessary, remove spent flower stalks to redirect energy. Avoid heavy pruning of main stems immediately after flowering, as blooms often form on mature growth. Gradually return to the regular fertilization schedule as the primary growing season begins. As fall approaches, prepare for dormancy by reducing watering and providing cooler temperatures, setting the stage for the next bloom cycle.