The Plant Society
Assorted Hoya
Hoya, or the “Wax Plant,” is a low-maintenance, attractive houseplant known for its thick, waxy leaves and fragrant, star-shaped flowers. With the right care, it can thrive for years and even bloom regularly.
Light
- Ideal Light: Bright, indirect light is best for Hoya. It can tolerate some direct sunlight but may suffer from leaf burn if exposed to intense, direct rays for long periods.
- Avoid: Low light, which can slow down growth and reduce flowering. Hoyas need sufficient light to bloom and stay healthy.
Watering
- Frequency: Water when the top 1-2 inches of soil are dry. Typically, Hoyas prefer to dry out a bit between waterings. Overwatering can lead to root rot.
- Watering Tips: Water thoroughly, ensuring the water drains out of the pot. Avoid letting the plant sit in water. During winter, reduce watering as the plant enters a rest period.
Temperature
- Ideal Range: 60°F to 80°F (15°C to 27°C). Hoya thrives in warm temperatures and is sensitive to cold.
- Avoid: Temperatures below 50°F (10°C) and sudden drafts or cold spells. Keep the plant away from air conditioning or heating vents.
Humidity
- Ideal Humidity: While Hoyas tolerate average indoor humidity (40-50%), they prefer moderate to high humidity (50-70%) for optimal growth.
- Increase Humidity: To increase humidity, you can mist the plant occasionally, use a humidity tray, or place the pot on a shallow tray filled with water and pebbles. Grouping plants together can also help boost humidity.
Soil
- Best Soil: Well-draining, light potting mix. A cactus or succulent mix works well, or you can use a general-purpose potting mix with added perlite for better drainage.
- Repotting: Repot your Hoya every 1-2 years or when it outgrows its container. Be sure to use a pot with good drainage to prevent waterlogging.
Fertilization
- Frequency: Feed your Hoya with a balanced, water-soluble fertilizer every 4-6 weeks during the growing season (spring and summer). Reduce fertilizing in the fall and winter when the plant’s growth slows.
- Fertilizer Tips: Use a balanced fertilizer or one that is slightly higher in phosphorus to encourage flowering. Be cautious not to overfertilize, as this can lead to weak growth.
Pruning & Maintenance
- Pruning: Trim dead or yellowing leaves regularly to maintain a tidy appearance. Prune leggy growth to encourage bushier growth and more blooms. If the plant becomes too large, you can also cut back long vines to shape the plant.
- Cleaning: Wipe the leaves occasionally with a damp cloth to remove dust. Be gentle as the leaves are thick and waxy, and excessive cleaning can cause damage.
Pests & Problems
- Common Pests: Watch for mealybugs, aphids, spider mites, and scale. Treat infestations promptly with insecticidal soap or by wiping the leaves with a damp cloth.
- Yellowing Leaves: Overwatering or poor drainage is usually the cause of yellowing leaves. Ensure the plant is not sitting in excess water and that the pot has drainage holes.
- Leaf Drop: A sudden drop in leaves may indicate a temperature shock, a change in light conditions, or overwatering. Make sure the plant is in a stable environment with consistent care.
Blooming
- Encouraging Blooms: Hoyas can bloom reliably with enough light and proper care. If your Hoya hasn’t bloomed yet, it may need more light, or it could simply need time to mature. Some Hoyas may not bloom for a few years but are worth the wait for their fragrant, waxy flowers.
- **Flowers