Hoya lacunosa
Hoya lacunosa
Hoya lacunosa, also known as the wax plant, is cherished for its stunning, fragrant flowers and attractive foliage. Native to Southeast Asia, this plant is a favorite among houseplant enthusiasts for its resilience and unique beauty.
Everything it needs
9 essentials at a glance
Watering
Hoya lacunosa prefers to dry out between waterings.
Water thoroughly when the top 1-2 inches of soil feel dry, typically every 1-2 weeks. In winter, reduce watering frequency to every 2-3 weeks. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause leaf wilting and dropping.
Light
This plant thrives in bright, indirect light but can tolerate some direct sunlight.
Ideal placement is near a window with filtered light, receiving about 6-8 hours of light daily. It can adapt to lower light conditions but may grow slower and produce fewer flowers.
Soil
Hoya lacunosa prefers a well-draining potting mix, ideally a blend of potting soil, perlite, and orchid bark.
The pH should be slightly acidic to neutral, around 6.0 to 7.0. Ensure the pot has drainage holes to prevent water retention.
Humidity
Hoya lacunosa enjoys higher humidity levels, ideally between 50-70%.
To increase humidity, consider using a humidifier or placing a tray of water with pebbles beneath the pot. Signs of low humidity include browning leaf edges and stunted growth.
Temperature
This plant thrives in temperatures between 65-80°F (18-27°C) and is not frost-tolerant.
It can survive in USDA hardiness zones 10-12 but should be protected from temperatures below 50°F (10°C) to prevent damage.
Fertilizing
Use a balanced liquid fertilizer with an NPK ratio of 20-20-20 or a specialized orchid fertilizer.
Fertilize every 4-6 weeks during the growing season (spring and summer) and reduce to once every 2-3 months in fall and winter. Signs of nutrient deficiency include yellowing leaves and poor growth.
Pruning
Prune Hoya lacunosa in late winter or early spring to encourage bushier growth and remove any dead or damaged stems.
Use clean, sharp scissors or pruning shears. Deadheading spent flowers can promote new blooms, so remove them once they fade.
Repotting
Repot Hoya lacunosa every 1-2 years or when it becomes root-bound.
Choose a pot 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and slow growth. Carefully remove the plant from its pot, trim any damaged roots, and place it in fresh potting mix.
Propagation
Hoya lacunosa can be propagated through stem cuttings.
Take a cutting with at least 2-3 leaves and a node, and allow it to dry for a few hours. Place the cutting in a well-draining potting mix and keep it moist but not soggy. Propagation is best done in spring or summer.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or insufficient light.
How to fix it
Adjust watering schedule and ensure the plant receives adequate light.
Root rot
Why it happens
Excess moisture in the soil.
How to fix it
Allow the soil to dry out and repot the plant in fresh, dry soil if necessary.
Browning leaf edges
Why it happens
Low humidity levels.
How to fix it
Increase humidity around the plant using a humidifier or pebble tray.
Stunted growth
Why it happens
Nutrient deficiency or inadequate light.
How to fix it
Fertilize appropriately and ensure the plant receives sufficient light.
Dropping leaves
Why it happens
Under-watering or sudden temperature changes.
How to fix it
Check soil moisture and maintain consistent temperature conditions.
Care through the year
Spring
In spring, increase watering frequency as the plant begins to actively grow. Fertilize every 4-6 weeks and consider repotting if root-bound.
Summer
During summer, maintain consistent watering and humidity levels. This is the peak blooming season, so ensure it receives adequate light.
Fall
In fall, gradually reduce watering frequency and fertilization. Prepare the plant for cooler temperatures as growth slows down.
Winter
In winter, water less frequently, about every 2-3 weeks. Keep the plant in a warm location away from drafts and cold windows.
Toxicity & Safety
Hoya lacunosa is considered non-toxic to pets (cats and dogs) and children. However, ingestion of large quantities may cause mild gastrointestinal upset.
Good to know
How often should I water my Hoya lacunosa?
Water your Hoya lacunosa when the top 1-2 inches of soil feel dry, typically every 1-2 weeks. In winter, reduce watering to every 2-3 weeks.
What light conditions are best for Hoya lacunosa?
Hoya lacunosa thrives in bright, indirect light but can tolerate some direct sunlight. Aim for 6-8 hours of filtered light daily for optimal growth.
How can I increase humidity for my Hoya lacunosa?
To increase humidity, use a humidifier or place a tray of water with pebbles beneath the pot. Aim for humidity levels between 50-70%.
When is the best time to propagate Hoya lacunosa?
The best time to propagate Hoya lacunosa is in spring or summer when the plant is actively growing. Use stem cuttings with at least 2-3 leaves.
What should I do if my Hoya lacunosa has yellow leaves?
Yellow leaves may indicate over-watering or insufficient light. Adjust your watering schedule and ensure the plant receives adequate light.
How often should I fertilize my Hoya lacunosa?
Fertilize every 4-6 weeks during the growing season (spring and summer) with a balanced liquid fertilizer, and reduce to every 2-3 months in fall and winter.
Is Hoya lacunosa toxic to pets?
Hoya lacunosa is considered non-toxic to pets and children, but ingestion of large quantities may cause mild gastrointestinal upset.
Grows well with
Track this plant in your garden.
Set care reminders, log growth, and join a community of plant lovers.