Elaeocarpus Japonicus

Description

Elaeocarpus japonicus, commonly known as the Japanese blueberry tree or Blueberry Ash, is an evergreen tree that belongs to the Elaeocarpaceae family. It is native to Japan and Korea, but it is widely grown in gardens and parks around the world due to its beautiful foliage and flowers. The tree can grow up to 10-15 meters tall, and its crown can spread up to 5-8 meters wide.

Taxonomic Information

Appearance

The leaves of Elaeocarpus japonicus are dark green, glossy, and oval-shaped. They are around 7-12 cm long, and they have a serrated edge. The tree produces beautiful, fragrant, bell-shaped, white or pink flowers that bloom from late spring to early summer. The fruit of the tree is a small, blue or black, globular drupe that is about 1 cm in diameter. The bark of the tree is grayish-brown and has a smooth texture.

Care Guide

Elaeocarpus japonicus is a relatively low-maintenance tree that can thrive in a variety of growing conditions. Here are some care tips for this plant:

Water: The tree prefers moist but well-drained soil. Water the tree regularly during the growing season, but be careful not to overwater it, as it can lead to root rot.

Fertilization: Fertilize the tree in the spring and fall with a balanced fertilizer. You can also add some organic matter, such as compost or well-rotted manure, to the soil to improve its fertility.

Soil: The tree prefers slightly acidic to neutral soil that is rich in organic matter. It can grow in a variety of soil types, including sandy, loamy, and clay soils.

Sunlight: The tree prefers full sun to partial shade. It can tolerate some shade, but it will produce fewer flowers and fruits in shady conditions.

Hardiness Zones: The tree is hardy in USDA zones 7-10. It can tolerate some frost and cold temperatures, but it may not survive in extremely cold climates.

Common Pests & Diseases

Elaeocarpus japonicus is relatively resistant to pests and diseases, but it can still be affected by some common problems, including:

Aphids: These small, soft-bodied insects can infest the leaves and stems of the tree, causing yellowing and deformation. You can control aphids by spraying the tree with a strong stream of water or using an insecticidal soap.

Powdery Mildew: This fungal disease can cause a white, powdery coating on the leaves and stems of the tree. You can control powdery mildew by improving air circulation around the tree and using a fungicide if necessary.

Habitat

Elaeocarpus japonicus is native to Japan and Korea, where it grows in forests and along rivers and streams. It prefers moist, well-drained soil and full sun to partial shade. The tree is commonly grown as an ornamental plant in gardens and parks around the world.

Question and Answer

Q: Is Elaeocarpus japonicus a fast-growing tree?

A: No, Elaeocarpus japonicus is a relatively slow-growing tree, and it can take several years to reach its full size.

Q: Can you prune Elaeocarpus japonicus?

A: Yes, you can prune Elaeocarpus japonicus to control its size and shape. Prune the tree in late winter or early spring before the new growth appears.

Q: Can you grow Elaeocarpus japonicus in a container?

A: Yes, you can grow Elaeocarpus japonicus in a container, but make sure to choose a large container that can accommodate the tree’s root system. Also, make sure to water and fertilize the tree regularly.

Q: Does Elaeocarpus japonicus attract birds?

A: Yes, Elaeocarpus japonicus is a popular tree for birds, as they are attracted to its fruits.

Related Plants

Here are some related plants to Elaeocarpus japonicus:

• Elaeocarpus decipiens
• Elaeocarpus reticulatus
• Elaeocarpus grandis
• Elaeocarpus sylvestris

References

• “Elaeocarpus japonicus.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c205.
• “Japanese Blueberry Tree.” The Spruce, www.thespruce.com/japanese-blueberry-tree-profile-3269698.
• “Elaeocarpus japonicus.” PlantNet, plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Elaeocarpus~japonicus.