10 - 15cm Hoya Clemensiorum Dark Leaf House Plant 10,5 cm Pot

Hoya clemensiorum ‘Dark Leaf’ is a rare and highly sought-after species known for its striking, deeply veined foliage and elegant flowers. Native to Borneo, this species thrives in warm, humid environments. It is part of the Apocynaceae family and is appreciated for both its stunning foliage and delicate blooms.

Leaves

The leaves of Hoya clemensiorum ‘Dark Leaf’ are elongated, thick, and heavily textured, with deep veins running along their surface. The dark green to almost black hue of the foliage makes this plant unique among Hoyas. The slightly leathery texture helps the plant retain moisture, making it adaptable to various humidity levels.

Flowers

The flowers appear in umbel-like clusters and are small, star-shaped, and waxy in texture. They are typically pale cream or yellowish with a deeper maroon or pink centre. The blooms emit a sweet fragrance, particularly in the evening, and are nectar-producing. With the right conditions, flowering occurs multiple times a year.

Growth Habit

As a climbing or trailing vine, Hoya clemensiorum ‘Dark Leaf’ grows by twining around supports. It is well-suited for trellises, moss poles, or hanging baskets, allowing its striking foliage to cascade beautifully. Growth is moderate, with new leaves and flower buds developing more rapidly in warm, humid conditions.

Care Guide

Light Requirements

This Hoya thrives in bright, indirect light. Direct sunlight can cause leaf burn, especially on its dark foliage, while too little light may slow growth and prevent flowering. An east- or west-facing window is ideal if grown indoors. It can tolerate some morning sun but should be protected from strong afternoon rays.

Temperature & Humidity

Warm temperatures between 18–30°C (65–86°F) are ideal. This species is not frost-tolerant and should always be kept above 10°C (50°F). High humidity (above 60%) is preferred, though it can adapt to moderate humidity levels. If indoor air is dry, misting or using a humidifier will help maintain optimal conditions.

Watering

Water when the top 2-3 cm of soil feels dry. Overwatering can cause root rot, so it is better to underwater slightly than to overwater. Reduce watering in winter when growth slows. Always use room-temperature, non-chlorinated water to prevent shocking the roots.

Soil & Potting Mix

A well-draining, aerated mix is essential for Hoya clemensiorum ‘Dark Leaf’. A good soil blend includes orchid bark, perlite or pumice, coco coir or peat moss, and a small amount of charcoal for improved drainage. This mix mimics the plant’s natural growing environment and prevents excess moisture retention.

Fertilisation

Feed the plant with a balanced liquid fertiliser every 2-4 weeks during the growing season (spring and summer). A fertiliser with higher phosphorus content can be used to encourage blooming. Reduce feeding in autumn and winter when the plant’s growth slows.

Potting & Repotting

Repot every 2-3 years or when the roots outgrow the pot. Choose a container with drainage holes to prevent excess moisture retention. Terracotta pots are ideal as they allow the soil to dry out more quickly, reducing the risk of root rot.

Pruning & Maintenance

Pruning helps maintain a compact shape and encourages bushier growth. Avoid cutting off flower peduncles, as Hoyas rebloom from the same nodes. Wipe the leaves with a damp cloth to remove dust and improve photosynthesis.

Propagation

Propagation is best done through stem cuttings. Cuttings should include at least one node and can be rooted in water, sphagnum moss, or a well-draining mix. Rooting typically takes 2-6 weeks, depending on temperature and humidity.

Common Problems & Solutions

Yellowing leaves are often a sign of overwatering, while wrinkled leaves may indicate underwatering or low humidity. If the plant does not flower, it may not be receiving enough light or nutrients. Root rot can occur if the soil retains too much moisture, so ensuring proper drainage is essential. Common pests include mealybugs, spider mites, and aphids, which can be managed with neem oil or insecticidal soap.