The Fishbone Cactus (Disocactus anguliger or Epiphyllum anguliger) is a unique epiphyte prized for its dramatically lobed, flattened stems that resemble a fish skeleton or a zigzag ribbon. Native to the rainforests of Mexico, this jungle cactus prefers filtered light and humidity over harsh, dry conditions. Propagating involves taking a cutting from the mother plant and encouraging it to grow roots, which is an easy way to multiply your collection or create a fuller display.
Preparing for Propagation
The best time to propagate a Fishbone Cactus is during its active growth period, typically in the spring or early summer. Select a healthy stem segment at least 3 to 4 inches long from the parent plant. Use a clean, sharp instrument, such as a sterile razor blade or pruning shears, to make a precise cut and prevent introducing pathogens.
The necessary supplies include a free-draining substrate, such as a specialty cactus or succulent mix, heavily amended with aeration materials like perlite or pumice. This ensures rapid water drainage, as these jungle cacti are susceptible to rot. Rooting hormone powder can be applied to the cut end to encourage faster root development, though this step is optional.
Step-by-Step Cutting Instructions
Make a clean, straight cut across a healthy section of the stem, ideally where the stem naturally narrows or at a leaf node. Set the cutting aside in a dry, shaded area for three to seven days, depending on the ambient humidity. This period allows the cut surface to dry out and form a hard, protective layer known as a callus.
Callusing seals the wound, preventing the cutting from absorbing too much moisture when planted and safeguarding against fungal infections and rot. Once the cut end has dried completely, insert the cutting into the prepared, well-draining soil mix. Plant the callused end shallowly, burying only the bottom half-inch to one inch of the cutting.
Place the cutting in a location that receives bright, indirect light, such as an east or west-facing window, protecting it from intense midday sun. Maintain a consistently warm environment, ideally between 65°F and 75°F, which encourages root initiation. Do not water the soil immediately after planting, allowing the cutting time to adjust.
Caring for the New Plant
Following the initial planting, a waiting period is necessary before introducing any moisture. For the first four to eight weeks, keep the soil dry to encourage root formation without the risk of rot. Root development is a slow process, and overwatering at this stage is the most common cause of failure.
Signs of successful rooting appear as slight resistance when the cutting is gently nudged, indicating that roots have anchored it to the soil. More definitive evidence is the appearance of small, new stem growth. Once established, transition to deep, infrequent watering, allowing the top two inches of soil to dry out completely between applications.
The established plant thrives in bright, filtered light conditions, mimicking its native rainforest habitat. Maintaining temperatures above 60°F is important, as is providing moderate humidity, which can be achieved through regular misting or placing the pot on a pebble tray.