Strawberry Tree
Arbutus Unedo
Arbutus unedo, commonly known as the Strawberry Tree, is a unique evergreen shrub native to the Mediterranean region. It is cherished for its attractive bark, glossy leaves, and edible berries, making it a popular choice for gardens and landscapes.
Everything it needs
9 essentials at a glance
Watering
Arbutus unedo prefers moderate watering, allowing the top inch of soil to dry out between waterings.
During the growing season (spring and summer), water every 1-2 weeks, increasing frequency during hot spells. In fall and winter, reduce watering to once every 2-4 weeks. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause leaf drop and wilting.
Light
This plant thrives in full sun to partial shade, ideally receiving 6-8 hours of direct sunlight daily.
It can tolerate some afternoon shade, especially in hotter climates. Avoid placing it in full shade, as this can lead to leggy growth and reduced flowering.
Soil
Arbutus unedo prefers well-draining, sandy or loamy soil with a pH range of 6.0 to 7.0.
A potting mix that includes peat moss, perlite, and compost is recommended to ensure good drainage. Avoid heavy clay soils that retain water, as this can lead to root rot.
Humidity
This plant prefers moderate humidity levels, around 40-60%.
To increase humidity, mist the leaves regularly or place a humidity tray filled with water and pebbles beneath the pot. Signs of humidity stress include browning leaf tips and curling leaves.
Temperature
Arbutus unedo thrives in temperatures between 60-75°F (15-24°C) and is hardy in zones 8-10.
It can tolerate brief periods of cold down to 20°F (-6°C) but may suffer damage in prolonged freezing conditions. In summer, ensure it is not exposed to extreme heat above 90°F (32°C).
Fertilizing
Use a balanced, slow-release fertilizer with an NPK ratio of 10-10-10 or similar.
Fertilize every 4-6 weeks during the growing season, and reduce or stop in fall and winter. Signs of nutrient deficiency include yellowing leaves (nitrogen), poor growth (phosphorus), and leaf drop (potassium).
Pruning
Prune Arbutus unedo in late winter or early spring before new growth begins.
Use sharp, clean pruning shears to remove dead or damaged branches and to shape the plant. Light pruning can help maintain its shape, while heavy pruning should be avoided as it can reduce flowering. Deadheading spent flowers can promote more blooms.
Repotting
Repot every 2-3 years or when the roots outgrow the pot.
Signs it needs repotting include roots growing out of the drainage holes and stunted growth. Choose a pot 1-2 inches larger in diameter. To repot, gently remove the plant from its current pot, loosen any tightly bound roots, and place it in fresh potting mix.
Propagation
Propagation can be achieved through seeds or semi-hardwood cuttings.
For seeds, collect ripe berries, extract seeds, and sow them in a well-draining mix in spring. For cuttings, take 4-6 inch cuttings in late summer, dip in rooting hormone, and plant in a moist potting mix. Keep in a warm, humid environment until roots develop, usually within 4-6 weeks.
When it's unhappy
Leaf drop
Why it happens
Usually caused by sudden changes in temperature or humidity, or improper watering.
How to fix it
Maintain consistent watering and humidity levels, and avoid placing the plant in drafty areas.
Yellowing leaves
Why it happens
Often a sign of over-watering or nutrient deficiency.
How to fix it
Check soil moisture levels and adjust watering frequency. Consider fertilizing if nutrient deficiency is suspected.
Root rot
Why it happens
Caused by overly wet soil and poor drainage.
How to fix it
Ensure proper drainage and reduce watering. If root rot is present, remove affected roots and repot in fresh soil.
Pest infestations (e.g., aphids, spider mites)
Why it happens
Can occur if the plant is stressed or in poor health.
How to fix it
Inspect the plant regularly, and treat infestations with insecticidal soap or neem oil.
Poor flowering
Why it happens
Can result from inadequate sunlight or improper pruning.
How to fix it
Ensure the plant receives sufficient sunlight and prune appropriately to encourage new growth.
Care through the year
Spring
In spring, resume regular watering and fertilizing as new growth begins. Prune any dead or damaged branches to encourage healthy growth.
Summer
During summer, ensure the plant receives adequate water, especially during hot spells. Monitor for pests and provide shade if temperatures exceed 90°F.
Fall
In fall, reduce watering frequency as the plant enters dormancy. Consider applying a slow-release fertilizer to prepare for winter.
Winter
In winter, protect the plant from freezing temperatures. Water sparingly, allowing the soil to dry out more between waterings.
Toxicity & Safety
Arbutus unedo is generally considered non-toxic to pets and children. However, the berries can cause mild gastrointestinal upset if ingested in large quantities. It is best to keep the plant out of reach of pets and young children.
Good to know
How often should I water my Arbutus unedo?
Water your Arbutus unedo every 1-2 weeks during the growing season, allowing the top inch of soil to dry out between waterings.
What kind of soil is best for Strawberry Trees?
Arbutus unedo prefers well-draining sandy or loamy soil with a pH of 6.0 to 7.0. A mix of peat moss, perlite, and compost is ideal.
Why are my Strawberry Tree leaves turning yellow?
Yellowing leaves can indicate over-watering or nutrient deficiency. Check soil moisture and consider fertilizing if needed.
When is the best time to prune my Arbutus unedo?
Prune your Strawberry Tree in late winter or early spring before new growth begins to maintain shape and promote flowering.
How can I increase humidity for my Arbutus unedo?
To increase humidity, mist the leaves regularly or place a humidity tray filled with water and pebbles beneath the pot.
Can I grow Arbutus unedo indoors?
Yes, you can grow Strawberry Trees indoors, but ensure they receive enough sunlight and maintain appropriate humidity and temperature levels.
What pests should I watch for on my Arbutus unedo?
Watch for pests like aphids and spider mites. Regular inspections and treatments with insecticidal soap can help manage infestations.
Grows well with
Track this plant in your garden.
Set care reminders, log growth, and join a community of plant lovers.