The Plant Society
Hoya Kerri
Hoya kerri, also known as the “Sweetheart Plant” due to its heart-shaped leaves, is a low-maintenance and resilient plant that is perfect for beginners. It’s a popular choice for indoor plant enthusiasts because of its attractive foliage and the occasional, fragrant clusters of flowers it produces.
1. Light Requirements
- Ideal Light: Hoya kerri thrives in bright, indirect light. Place it in a location where it receives filtered sunlight, such as near a window with sheer curtains.
- Avoid Direct Sunlight: While Hoya kerri enjoys bright light, direct sunlight can scorch the leaves, causing them to burn or fade. Indirect light is ideal for healthy growth.
- Low Light Tolerance: Hoya kerri can tolerate low light conditions, but its growth will slow down, and it may not flower as frequently. For optimal growth and flowering, provide bright, indirect light.
2. Watering
- Watering Frequency: Water your Hoya kerri when the top 1-2 inches of soil are dry. Overwatering is one of the most common mistakes with Hoyas, so allow the soil to dry out between waterings.
- How to Water: Water thoroughly until excess water drains from the bottom of the pot. Ensure the pot has proper drainage to avoid waterlogging the roots, which can lead to root rot.
- Avoid Overwatering: Hoya kerri is susceptible to root rot if the soil remains too wet for too long. Make sure the potting mix drains well and don’t water until the soil has dried out completely at the top.
- Water Quality: Use room-temperature water, and if possible, use distilled or rainwater, as Hoya plants can be sensitive to chemicals like fluoride or chlorine found in tap water.
3. Temperature and Humidity
- Temperature Range: Hoya kerri prefers temperatures between 65°F to 80°F (18°C to 27°C). It thrives in warm conditions and should be protected from drafts or extreme temperature fluctuations.
- Humidity: Hoya kerri enjoys moderate humidity but is relatively adaptable. While it will thrive in higher humidity (50% or more), it can tolerate lower levels, especially in indoor environments. If you notice the plant’s edges turning brown, it could be due to dry air. Increase humidity using a humidity tray, misting, or a humidifier if necessary.
- Avoid Cold: This plant does not tolerate cold temperatures. Keep it away from cold drafts, air conditioners, or windows during winter months where it might be exposed to temperatures below 50°F (10°C).
4. Soil and Potting
- Soil Type: Hoya kerri requires well-draining, airy soil. A cactus or succulent mix works well for this plant, as it ensures good drainage and prevents the roots from sitting in moisture. You can also mix perlite, orchid bark, or sand into your potting mix to enhance drainage.
- Repotting: Repot your Hoya kerri every 1-2 years or when it becomes root-bound. Choose a pot that is slightly larger than its current one, with drainage holes to ensure excess water can escape.
- Potting: Make sure the pot has proper drainage to avoid water accumulation. Hoya kerri prefers to have its roots slightly constricted, so avoid using a pot that is too large.
5. Fertilizing
- Feeding Frequency: During the growing season (spring and summer), feed Hoya kerri once a month with a balanced, water-soluble fertilizer diluted to half strength. A fertilizer high in phosphorus will encourage blooming.
- Avoid Overfertilizing: Overfertilizing can lead to salt buildup in the soil, which can damage the roots. Reduce or stop fertilizing in fall and winter when the plant is not actively growing.
- Organic Fertilizers: Organic fertilizers or slow-release fertilizers can be a great option for consistent, long-term feeding.
6. Pruning and Maintenance
- Pruning: Hoya kerri is a slow grower but can benefit from occasional pruning to maintain its shape and encourage bushier growth. Prune dead or yellowing leaves and trim long, leggy vines to promote a more compact appearance.
- Cleaning: Clean the leaves periodically with a soft, damp cloth to remove dust. This will help the plant absorb light better and stay healthy.
- Leaf Care: Be gentle when handling the leaves, as Hoya kerri has delicate, waxy leaves that can tear or bruise if not handled carefully.
7. Common Problems
- Yellowing Leaves: Yellowing leaves can be a sign of overwatering, poor drainage, or lack of light. Ensure the plant is in a bright location with proper drainage and adjust your watering routine as needed.
- Brown Leaf Tips: Brown leaf tips can be caused by underwatering, low humidity, or inconsistent watering. If you see brown tips, increase humidity and ensure the plant is being watered thoroughly but infrequently.
- Leggy Growth: If Hoya kerri becomes leggy or sparse, it may not be getting enough light. Move the plant to a brighter spot with indirect light to encourage more compact growth.
- Pests: Hoya kerri can occasionally attract pests such as mealybugs, aphids, and spider mites. Inspect the plant regularly for signs of pests and treat with neem oil or insecticidal soap as needed.
8. Toxicity
- Pets: Hoya kerri is non-toxic to pets (cats and dogs). It is safe to have around animals, but it’s best to prevent pets from chewing on the leaves, as they can be sensitive to plant matter.
By following these care instructions, your Hoya kerri will thrive and eventually reward you with fragrant clusters of waxy flowers. This hardy and easy-to-care-for plant is a great addition to any indoor space, with its heart-shaped leaves adding charm and beauty to your home.