The Japanese Laurel (Aucuba japonica) is a popular and adaptable houseplant, known for its glossy, often variegated foliage. Its resilience and undemanding nature make it a favored choice for indoor settings.
Japanese Laurel Houseplant Care
Light
Japanese Laurels thrive in bright, indirect light. Placing them near an east or north-facing window is ideal. While they tolerate lower light, insufficient illumination leads to less vibrant foliage and leggy growth. Direct, intense sunlight can scorch leaves, causing unsightly brown spots or bleaching.
Watering
Allow the top inch or two of soil to dry out completely between waterings. Water thoroughly until it drains from the bottom of the pot. Overwatering can lead to root rot, a common issue, so ensure the pot has adequate drainage holes.
Soil and Potting
A well-draining potting mix rich in organic matter is ideal. A standard indoor potting mix amended with perlite or sand improves drainage and aeration. Pots with drainage holes are essential to prevent water accumulation and protect roots. Repot every two to three years, or when the plant becomes root-bound (roots circling the pot or emerging from drainage holes).
Temperature and Humidity
Japanese Laurels prefer cool to moderate indoor temperatures (55-70°F / 13-21°C). They tolerate slightly warmer conditions but perform better away from heat sources like radiators. Average household humidity is sufficient. While they appreciate higher humidity, especially in dry winter months, they are not overly sensitive to fluctuations in air moisture.
Fertilizing
During the active growing season (spring through early autumn), Japanese Laurels benefit from regular fertilization. Apply a balanced liquid fertilizer, diluted to half strength, every four to six weeks to support healthy growth. Reduce or cease fertilization during winter when growth naturally slows. Over-fertilizing can lead to nutrient burn, damaging roots and foliage.
Common Issues and Solutions
Pests
Japanese Laurels can encounter common indoor pests like spider mites, mealybugs, and scale insects. Spider mites manifest as fine webbing on leaf undersides; mealybugs appear as small, white, cottony masses in leaf axils. Regular inspection helps early detection. Treat infestations by wiping leaves with a damp cloth, applying insecticidal soap, or using neem oil according to product instructions.
Leaf Problems
Yellowing leaves, especially lower ones, suggest overwatering or nutrient deficiency. Browning leaf tips point to low humidity or underwatering. Dull or dusty foliage needs gentle cleaning with a soft, damp cloth, which also helps light absorption. Addressing these symptoms promptly involves adjusting care routines.
Growth Concerns
Leggy growth (long stems with sparse foliage) indicates insufficient light. Moving the plant to a brighter location encourages more compact, bushy development. Lack of new growth might signal dormancy (especially in winter) or that the plant is root-bound and needs repotting. Ensuring adequate nutrients through proper fertilization during the growing season also supports vigorous new shoots.
Toxicity and Safety
Japanese Laurel is toxic if ingested by humans and pets. All parts, including leaves, stems, and especially red berries, contain compounds that can cause gastrointestinal upset. Symptoms may include nausea, vomiting, and diarrhea. Place Japanese Laurel plants out of reach of small children and curious pets. Wash hands thoroughly after handling to prevent accidental exposure.
Propagation
Propagate Japanese Laurel using stem cuttings, ideally taken in late spring or early summer. Select healthy, non-flowering stems 4-6 inches long, cutting just below a leaf node. Remove lower leaves, leaving a few at the top. Cuttings can be rooted in water or a well-draining potting mix. If using soil, dip the cut end in rooting hormone powder for better success.