Japanese Laurel
Aucuba japonicaUSDA | Grow Zone
7-10Outdoors all year in zones 7 to 10. Anywhere colder, keep it as a houseplant. Protect it below 32°F.
- Light
- Partial to full shade
- Water
- Every 1-2 weeks
- Humidity
- 40-60%
- Temperature
- 60-75°F
- Difficulty
- Beginner
- Growth
- Moderate
- Mature size
- 6-10 ft tall
- Pets
- Mildly toxic to pets
Aucuba japonica, commonly known as Japanese Laurel, is a versatile evergreen shrub native to East Asia. Its glossy leaves and resilience to low light make it a popular choice for shaded gardens and indoor spaces.
Ask Vesper about Japanese Laurel
Ideal temperature
60-75°F is where it grows fastest. Below 32°F cold damage starts.
Spacing and harvest
- Mature size
- 6-10 ft tall
- Plant apart
- 36-60 in
- Frost
- Half hardy: light frost only
Everything it needs
9 essentials at a glance
Watering
Aucuba japonica prefers consistently moist soil but should not be waterlogged.
Water every 1-2 weeks, allowing the top inch of soil to dry out between waterings. During the growing season (spring and summer), increase frequency if the soil dries out quickly. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause leaf drop and wilting.
Light
This plant thrives in partial shade to full shade, making it ideal for low-light areas.
It prefers 4-6 hours of indirect sunlight daily and can tolerate dappled sunlight. Avoid direct sunlight as it can scorch the leaves.
Soil
Aucuba japonica prefers well-draining soil with a pH range of 6.0 to 7.0.
A mix of potting soil, peat moss, and perlite is recommended to ensure good drainage and aeration.
Humidity
This plant enjoys moderate to high humidity levels, ideally around 40-60%.
To increase humidity, mist the leaves regularly or place a humidifier nearby. Signs of low humidity include brown leaf tips and edges.
Temperature
Aucuba japonica thrives in temperatures between 60-75°F (15-24°C) and is hardy in USDA zones 7-10.
It can tolerate brief periods of cold but should be protected from frost and extreme heat.
Fertilizing
Use a balanced, slow-release fertilizer with an NPK ratio of 10-10-10 during the growing season.
Fertilize every 4-6 weeks from spring to early fall. Signs of nutrient deficiency include yellowing leaves and stunted growth.
Pruning
Prune Aucuba japonica in late winter or early spring to maintain shape and remove any dead or damaged branches.
Use clean, sharp pruning shears for best results. Deadheading is not necessary, but removing spent leaves can improve appearance.
Repotting
Repot every 2-3 years or when the plant becomes root-bound.
Choose a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. When repotting, gently remove the plant from its pot, loosen the roots, and place it in fresh soil.
Propagation
Propagation can be done through stem cuttings or division.
For stem cuttings, take 4-6 inch cuttings in spring, dip in rooting hormone, and plant in a moist potting mix. Keep the cuttings in a warm, humid environment until roots develop, which may take several weeks. Division can be done in spring when repotting.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or nutrient deficiency.
How to fix it
Check soil moisture and adjust watering schedule. Fertilize if nutrient deficiency is suspected.
Brown leaf tips
Why it happens
Low humidity or underwatering.
How to fix it
Increase humidity by misting or using a humidifier, and ensure consistent watering.
Leaf drop
Why it happens
Sudden temperature changes or stress from repotting.
How to fix it
Maintain stable temperatures and avoid drastic changes in environment.
Root rot
Why it happens
Excessive moisture and poor drainage.
How to fix it
Ensure proper drainage, reduce watering frequency, and consider repotting into fresh soil.
Pests (e.g., spider mites, aphids)
Why it happens
Dry conditions or overcrowding.
How to fix it
Regularly inspect for pests, maintain humidity, and treat infestations with insecticidal soap.
Care through the year
Spring
In spring, increase watering as the plant begins to actively grow. Fertilize every 4-6 weeks with a balanced fertilizer to support new growth.
Summer
During summer, ensure the plant is not exposed to direct sunlight. Maintain consistent moisture and monitor for pests due to warmer temperatures.
Fall
In fall, gradually reduce watering as the plant's growth slows. Continue to fertilize until late fall, then stop for the winter.
Winter
In winter, protect the plant from cold drafts and frost. Reduce watering frequency, allowing the soil to dry out slightly between waterings.
Toxicity & Safety
Aucuba japonica is considered mildly toxic to pets and humans. Ingestion of the berries can cause gastrointestinal upset, including vomiting and diarrhea. Keep away from children and pets.
Good to know
Why are my Aucuba japonica leaves turning yellow?
Yellow leaves can indicate over-watering or a nutrient deficiency. Check the soil moisture and adjust your watering schedule accordingly.
How often should I water my Japanese Laurel?
Water your Aucuba japonica every 1-2 weeks, allowing the top inch of soil to dry out between waterings to prevent root rot.
What light conditions are best for Aucuba japonica?
This plant thrives in partial to full shade, preferring 4-6 hours of indirect sunlight daily to avoid leaf scorch.
How can I increase humidity for my Aucuba japonica?
Increase humidity by misting the leaves regularly, placing a humidifier nearby, or grouping it with other plants.
When is the best time to prune Aucuba japonica?
Prune in late winter or early spring to maintain shape and remove any dead or damaged branches for better growth.
How do I propagate Aucuba japonica?
Propagate through stem cuttings taken in spring or by division. Ensure cuttings are kept in a warm, humid environment until roots develop.
Is Aucuba japonica toxic to pets?
Yes, Aucuba japonica is mildly toxic to pets and humans. Ingestion of the berries can cause gastrointestinal upset.
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