Hoya coronaria ‘White’ is a captivating houseplant prized for its unique foliage and striking blooms. Its thick, often fuzzy leaves and large, star-shaped white flowers make it a desirable addition to any indoor plant collection.
Understanding Hoya coronaria White
Hoya coronaria ‘White’, also known as ‘Waxflower’ or ‘Waxplant’, is a vining plant native to Southeast Asia, particularly Malaysia and Borneo. It often grows as an epiphyte, clinging to trees, which influences its home care. The plant produces thick, velvety, oval-shaped leaves, typically deep green or blue-green with prominent veins.
Its true spectacle lies in its flowers. Hoya coronaria ‘White’ is known for its large, fragrant, star-shaped white blooms, which can appear in clusters up to 20 cm in size. Individual flowers measure between 2-4 cm across and have a fuzzy texture. These blossoms often release a sweet, intoxicating fragrance, especially at night. This Hoya belongs to the Eriostemma group, known for having some of the largest Hoya flowers.
Essential Care for Hoya coronaria White
Light Requirements
Hoya coronaria ‘White’ thrives in bright, indirect light, mimicking its natural dappled environment. While it tolerates some direct morning sun, intense afternoon sun can scorch its leaves, causing yellowing or bleaching. An east or west-facing window is ideal. Inadequate light can result in stunted growth and a reluctance to bloom.
Watering Practices
Proper watering is important for Hoya coronaria ‘White’, as it is susceptible to root rot if kept consistently wet. The soil should dry out almost completely between waterings. Check moisture by inserting a finger about an inch or two into the potting mix; if dry, water thoroughly until it drains from the bottom. During spring and summer, water more frequently (typically every 7-10 days). In fall and winter, reduce watering to every two to three weeks.
Ideal Soil Mix
A well-draining, airy soil mix is essential for Hoya coronaria ‘White’ to prevent waterlogging and promote healthy root development. As an epiphyte, it needs a substrate that allows good aeration around its roots. An effective mix includes components like orchid bark, perlite, and coco chips, which provide drainage. Some growers also recommend adding crushed oyster shell to support blooming.
Temperature and Humidity
This Hoya prefers warmer temperatures, ideally between 65-85°F (18-29°C), and will not tolerate temperatures below 50°F (10°C). Hoya coronaria ‘White’ also appreciates moderate to high humidity levels, ideally between 50-70%. While average household humidity is often sufficient, supplemental humidity through misting, a pebble tray, or a humidifier can encourage optimal growth and flowering.
Fertilization
During its active growing season (spring and summer), Hoya coronaria ‘White’ benefits from regular fertilization. Use a low-nitrogen fertilizer with phosphorus and potassium to encourage blooming. Fertilize approximately once a month using a diluted general houseplant fertilizer. Reduce or cease fertilization during fall and winter when the plant’s growth slows.
Propagating Hoya coronaria White
Propagating Hoya coronaria ‘White’ is commonly achieved through stem cuttings. The best time to take cuttings is during spring and summer. Select a healthy stem section about 10-15 centimeters long with at least two leaves. Remove the leaves from the bottom node or two.
Cuttings can be rooted in either water or a well-draining soil mix. For water propagation, place the cutting in a glass of room-temperature water, ensuring no leaves are submerged, and change the water periodically. Roots typically develop within 2-3 weeks. For soil propagation, insert the cutting into a moist, airy mix composed of perlite, coco coir, or sphagnum moss. Maintain consistent moisture in the rooting medium for successful establishment.
Common Issues and Troubleshooting
Hoya coronaria ‘White’ can encounter common issues, often related to improper care. Yellowing leaves can indicate overwatering or too much direct sunlight. Soft, mushy leaves, especially at the base, often point to root rot from excessive moisture. Brown leaf margins can also signal watering issues.
Pests like mealybugs, spider mites, and scale insects can occasionally infest Hoyas. These sap-sucking pests cause stunted growth, leaf discoloration, and sticky residue (honeydew) on foliage. Inspecting plants regularly and treating infestations early with insecticidal soap or neem oil helps manage these issues. Proper watering and light conditions maintain a robust plant, making it less susceptible to pests and diseases.