Hoya bicknellii is a captivating houseplant known for its appealing characteristics. Discovered in Matutinao, Badian, Cebu, Philippines, this species was formally published in 1999 and named after its discoverer, David Bicknell. Its compact growth habit, thick, glossy green leaves, and clusters of delicate, star-shaped flowers with creamy white and pink hues make it a desirable addition to indoor plant collections.
Hoya Bicknellii Care Guide
Light Needs
Hoya bicknellii thrives in bright, indirect light, which supports healthy growth and flower development. Place it near an east or west-facing window to receive gentle morning sun. Shield the plant from intense, direct afternoon sunlight to prevent leaf scorching. Insufficient light leads to stunted growth, while too much direct sun can cause leaves to redden or bleach.
Watering Practices
Hoya bicknellii prefers its soil to dry out between waterings. This plant stores water in its succulent leaves, making it susceptible to root rot if kept consistently wet. To determine when to water, insert a finger into the soil; if the top two inches feel dry, it is time to provide water. Ensure excess water drains completely from the pot after watering to prevent waterlogging.
Soil Requirements
A well-draining and airy soil mix is important for Hoya bicknellii, mimicking its epiphytic nature where it grows on trees. A suitable blend includes components like orchid bark, perlite, and coco chips, which provide excellent aeration and prevent compaction. This chunky substrate allows for good airflow around the roots and facilitates rapid drainage, reducing the risk of fungal issues.
Temperature and Humidity
Hoya bicknellii prefers a warm environment, thriving in temperatures from 18 to 29 degrees Celsius (65-85 degrees Fahrenheit). It does not tolerate temperatures below 10 degrees Celsius (50 degrees Fahrenheit). High humidity levels are also beneficial, reflecting its origins in Southeast Asia where humidity averages 70-80%. While it adapts to average household humidity, providing additional moisture through a humidifier or pebble tray supports more robust growth.
Fertilizing
During its active growing season, typically spring and summer, Hoya bicknellii benefits from regular fertilization. A balanced liquid fertilizer or one with a slightly higher phosphorus content encourages healthy foliage and abundant blooms. Fertilize approximately once a month, diluting the fertilizer to half strength to avoid over-fertilization. Reduce or cease fertilization during the cooler, dormant months.
Propagating Hoya Bicknellii
Propagating Hoya bicknellii is commonly achieved through stem cuttings, a reliable method for expanding your collection. Select a healthy stem section 10-15 centimeters (4-6 inches) long, ensuring it has at least two to six nodes. Make a clean cut with sharp, sterilized pruners, and allow the cutting to air dry for 12-24 hours to form a callus, which helps prevent rot upon planting.
The prepared cutting can then be rooted in water or a well-draining substrate. For water propagation, submerge the bottom node(s) in clean water, changing it weekly to maintain freshness. Alternatively, plant the cutting into a light, airy mix such as perlite, sphagnum moss, or a blend of coco coir and perlite, ensuring at least one node is buried. Maintaining high humidity around the cutting, perhaps by covering it with a clear plastic bag or dome, encourages faster root development. Once roots are about an inch or two long, the new plant can be potted into its permanent soil mix.
Troubleshooting Common Hoya Bicknellii Issues
Several issues can arise when caring for Hoya bicknellii, signaling a need for adjustment in its environment or routine. Yellowing leaves are a common indicator; widespread yellowing and mushy leaves point to overwatering and potential root rot. Conversely, individual yellowing leaves that feel dry or crispy suggest underwatering. Adjusting watering frequency to allow the soil to dry adequately between sessions resolves these concerns.
If leaves develop a reddish tint, it indicates the plant is receiving too much direct sunlight, leading to sun stress. Moving the plant to a location with brighter, more indirect light restores its green coloration. Pests like mealybugs, spider mites, and scale insects can infest Hoya bicknellii, appearing as small white, web-like, or hard-shelled spots on leaves and stems. Address these promptly with rubbing alcohol, insecticidal soap, or neem oil to prevent wider infestation. Fungal issues such as leaf spot or gray mold may occur in overly moist conditions or with poor air circulation, and can be managed by improving ventilation and removing affected foliage.