Ehretia microphylla, commonly known as the Fukien Tea Tree or Philippine Tea Tree, is a beloved plant that brings a touch of the tropics indoors. Its appeal lies in its small, glossy leaves, delicate white flowers, and often gnarled, attractive trunk, making it a popular choice for bonsai enthusiasts and houseplant lovers.
Getting to Know Ehretia Microphylla
Ehretia microphylla is a small evergreen shrub or tree native to tropical and subtropical Southeast Asia, including Southern China, India, and the Philippines. In its natural habitat, it can reach heights of up to 4 meters, but remains much smaller when cultivated. The plant is recognized for its fine branching, compact growth, and ability to produce tiny white flowers throughout the year, sometimes followed by small red berries.
Core Care Requirements
Light
Ehretia microphylla thrives in bright, indirect light. Place it near a south, east, or west-facing window. While it appreciates daily sunlight, direct afternoon sun can scorch its leaves. If natural light is limited, supplement with a grow light for 6-12 hours daily to support healthy growth and flowering.
Watering
Consistent moisture is important for Ehretia microphylla, but avoid waterlogging. Water thoroughly when the top inch or two (2-3 cm) of soil feels dry. Allowing the soil to dry out slightly between waterings helps prevent root rot. Shriveled leaves indicate underwatering; yellowing leaves signal overwatering. Ensure the pot has adequate drainage holes.
Soil Mix
Ehretia microphylla prefers a well-draining soil mix that retains some moisture. A suitable blend includes potting soil amended with orchid bark, perlite, and coarse sand or peat moss. Aim for a slightly acidic to neutral soil pH, between 6.0 and 6.5.
Temperature and Humidity
As a tropical plant, Ehretia microphylla flourishes in warm and humid environments. The optimal temperature range is 60°F to 72°F (15°C to 22°C). Protect it from cold drafts. To maintain humidity, mist the foliage regularly or place the plant on a humidity tray with pebbles and water, ensuring the pot does not sit in the water.
Fertilization
During the active growing season (spring and summer), Ehretia microphylla benefits from regular fertilization. Apply a balanced, water-soluble fertilizer, diluted to half-strength, every two to four weeks. Water the plant before applying fertilizer to prevent root burn. Reduce fertilization frequency in fall and winter, or cease it until spring.
Pruning and Shaping Techniques
Pruning is important for Ehretia microphylla to maintain its shape, encourage denser growth, and promote branching. Pinch back new shoots for a more compact plant. Structural pruning can be performed during active growth in spring and summer to define the plant’s form. Use clean, sharp tools. Regular pruning also removes dead or diseased branches.
Repotting Your Ehretia
Repotting is necessary for Ehretia microphylla to ensure continued healthy growth. Repot every two to three years, or when root-bound. Repot in early spring, before the active growing season.
To repot, gently remove the plant from its container. Tease out some outer roots and prune back one-fourth of the root mass with clean, sharp tools. Place fresh, well-draining soil mix in the new, slightly larger pot and center the plant. Fill with new soil and water. After repotting, reduce watering and withhold fertilization for a few weeks for recovery.
Propagating New Ehretia Plants
Propagating Ehretia microphylla with stem cuttings is the most popular method. Take cuttings during the active growing season, in spring or early summer. Select healthy, semi-hardwood stems with at least two nodes.
Remove leaves from the bottom inch or two of the cutting and plant it in a moist, well-draining rooting medium, such as peat moss and perlite. Place potted cuttings in a warm, humid environment, possibly under a plastic bag or in a mini-greenhouse, to improve rooting. Roots develop in 6-8 weeks.
Troubleshooting Common Issues
Ehretia microphylla can exhibit issues signaling environmental stress or pest infestations. Yellowing leaves result from overwatering or underwatering. Leaf drop may occur from temperature or light changes, or consistent underwatering. Proper watering and stable environmental conditions prevent these problems.
Common pests include spider mites, aphids, mealybugs, and scale insects. Spider mites can be deterred by regular misting. Aphids and mealybugs are removed with insecticidal soap or neem oil. Prompt identification and treatment prevent infestations.