Hoya erythrina, commonly known as the Wax Plant or Hoya Erythrina, is a rare and highly collectible tropical vine admired for its glossy, elongated leaves and clusters of star-shaped, sweetly scented flowers. A member of the Apocynaceae family and native to Southeast Asia, this species epitomises the charm of the Hoya genus — combining sculptural foliage with stunning, long-lasting blooms.

Its thick, leathery leaves are dark green and slightly veined, with a subtle sheen that gives the plant a polished, elegant look. When mature and well cared for, Hoya erythrina produces spherical umbels of waxy pink flowers with crimson centres. Each bloom emits a delightful fragrance, especially in the evenings. Slow-growing but incredibly rewarding, this Hoya makes a sophisticated addition to any plant enthusiast’s collection.

Graceful, exotic, and full of personality, Hoya erythrina is perfect for trailing, climbing, or displaying in hanging baskets — a living work of art for bright indoor spaces.

Hoya erythrina – Care Guide

Light

Thrives in bright, indirect light. It appreciates several hours of filtered sunlight daily but should be protected from harsh direct sun, which can scorch the leaves. Too little light may result in reduced flowering. East- or west-facing windows are ideal.

Watering

Allow the top 3–5 cm of soil to dry between waterings. Hoya erythrina stores moisture in its leaves and does not tolerate being constantly wet. Water thoroughly, then let excess drain away. In winter, reduce watering frequency but do not let the plant dry out completely.

Temperature and Humidity

Temperature: Prefers warmth between 18–28 °C. Protect from drafts and temperatures below 15 °C.
Humidity: Moderate to high humidity (50–70%) encourages lush foliage and better flowering. Mist occasionally or place near a humidifier for optimal results.

Soil and Potting

Use a well-draining, airy mix — orchid bark, perlite, and coco coir combined with a little compost create the perfect environment for roots to breathe. Hoyas prefer being slightly root-bound, so only repot every 2–3 years. Choose a pot with excellent drainage.

Feeding

Feed every 4–6 weeks in spring and summer with a diluted, balanced fertiliser or a formula designed for flowering houseplants. Suspend feeding during autumn and winter when growth slows.

Pruning and Maintenance

Trim long or leggy vines to maintain shape and encourage branching. Avoid removing the spurs (the small stubs from which flowers bloom), as Hoyas will reflower from the same spurs each season. Wipe leaves gently with a damp cloth to remove dust and enhance their shine.

Growth and Maturity

A slow to moderate grower, Hoya erythrina can reach up to 1.5–2 metres when allowed to trail or climb. Mature plants may take a few years to flower, but once established, they bloom annually under the right conditions.

Common Issues

• Yellowing leaves: Overwatering or poor drainage.

• Wrinkled leaves: Underwatering or low humidity.

• No flowers: Insufficient light or nutrients.

• Pests: Occasionally affected by mealybugs or aphids — treat with neem oil or insecticidal soap.

Background and Benefits

Native to the tropical forests of Southeast Asia, Hoya erythrina grows as an epiphyte, anchoring itself to trees and absorbing moisture from the air. Its stunning, waxy flowers and vining habit have made it a favourite among Hoya collectors worldwide.

Like other Hoyas, it’s an excellent air purifier, filtering toxins from the air and improving indoor quality. Its resilient nature and sweetly scented blooms make it an exceptional choice for plant lovers who value both beauty and ease of care.

Quick Care Summary

• Light: Bright, indirect light; avoid harsh direct sun

• Water: Allow top few cm of soil to dry between waterings

• Temperature: 18–28 °C; avoid below 15 °C

• Humidity: Moderate to high (50–70%)

• Soil: Airy, well-draining mix – orchid bark, perlite, coco coir

• Feed: Every 4–6 weeks in spring/summer

• Growth: 1.5–2 m trailing or climbing vine; pink waxy flowers with red centres

⚠️ Toxicity note: Mildly toxic if ingested; keep out of reach of pets and children.

Styling Tip

Display Hoya erythrina in a hanging pot or trailing from a high shelf where its vines can cascade elegantly. Alternatively, train it up a trellis or hoop for a structured, modern look. It pairs beautifully with other waxy-leaved tropicals such as Hoya wayetii ‘Variegata’ or Philodendron ‘Micans’. Perfect for bright living rooms, conservatories, or offices, Hoya erythrina adds an air of refined tropical beauty and subtle fragrance to your indoor oasis.