Houseplant 101: Hoya
Origins of Hoya
Hoyas, often called "wax plants" due to their glossy leaves, are native to tropical and subtropical regions of Asia, Australia, and the Pacific Islands. These vining epiphytes naturally grow on trees, using their roots to cling to bark and absorb moisture and nutrients from the air. Hoya are well-adapted to warm, humid environments, making them resilient and easy to care for in homes.
Care Instructions for Hoya
Hoya are beloved for their unique foliage, trailing vines, and beautiful blooms. Here’s how to keep them thriving:
Light
Hoya love a bright spot and can tolerate several hours of direct sunlight, especially in the morning or late afternoon. Many varieties, especially those with variegated or colorful foliage, sun-stress beautifully, developing shades of pink or purple under higher light conditions.
South-facing windows are ideal, offering bright light throughout the day. Just be cautious of harsh midday sun, which may scorch the leaves of more sensitive varieties.
Watering
Hoya prefer their soil to dry out about 90% of the way before being watered again. Allow most of the soil to dry while ensuring it doesn't completely dry out, as this can stress the plant. Overwatering is a common issue, so always check the soil's moisture level before watering.
In the warmer growing months (spring and summer), they may need more frequent watering, but in fall and winter, watering should be reduced to match their slower growth.
Humidity
As tropical plants, Hoya enjoy moderate to high humidity. Most varieties can adapt to average indoor humidity, but they’ll thrive in levels of 50% or higher. But I wouldn’t worry much about humidity hoya will still grow in ambient humidity the most important factor is light.
Temperature
Hoyas prefer temperatures between 65-80°F (18-27°C). Avoid exposing them to drafts, sudden temperature changes, or cold environments below 50°F (10°C).
Soil
Use a light, well-draining soil mix for Hoyas. A blend designed for aroids or orchids works well, as it provides aeration and mimics their natural growing conditions. A good option is Emma's Premium Aroid Mix, which ensures proper drainage and supports healthy root growth.
Fertilizing
Feed Hoyas during the growing season (spring and summer) with a balanced, water-soluble fertilizer every other week. Reduce feeding in fall and winter when growth slows. (This is my absolute favorite all-natural fertilizer)
The Unique Blooms of Hoya
One of the most exciting aspects of caring for Hoya is their stunning, star-shaped blooms. These flowers grow in clusters called umbels and are often fragrant, with scents ranging from sweet and floral to spicy and musky. Some varieties even produce nectar that can drip from the blooms.
When They Bloom: Hoya typically bloom in the warmer months when they receive plenty of light and consistent care.
Encouraging Blooms: To encourage flowering, ensure your Hoya gets bright, indirect light, and avoid moving the plant unnecessarily. Blooms often develop on peduncles (flowering stems) that the plant reuses, so never cut them off.
Blooming Cycle: Flowers can last for weeks and, under ideal conditions, may appear multiple times a year.
Propagation
Hoyas are easy to propagate using stem cuttings:
Cut a healthy vine with at least one node and a few leaves.
Place the cutting in water, sphagnum moss, or directly into soil.
Keep the cutting in a warm, humid spot with bright, indirect light. Roots typically develop within a few weeks.
By propagating Hoya, you can expand your collection or share plants with friends!
Summary
To keep your Hoya happy:
Provide Bright Light: Choose a south-facing window for optimal light. Many varieties develop stunning pink or purple tones when sun-stressed.
Water Correctly: Let the soil dry out about 90% before watering again, avoiding overwatering.
Maintain Humidity: Boost humidity for optimal growth, especially for finicky varieties.
Use Proper Soil: A light, airy mix like Emma's Premium Aroid Mix is ideal.
Encourage Blooms: Provide consistent care, avoid cutting peduncles, and don’t move the plant unnecessarily.
With the right conditions, Hoyas reward you with their striking foliage and fragrant blooms.
Happy planting!
