Japanese Stewartia (Stewartia pseudocamellia) is pollinated by a variety of insects, including bees, wasps, and butterflies. The flowers of the Japanese Stewartia tree are typically large and showy, with a central cluster of yellow stamens that attract pollinators.

Pollination typically occurs during the summer months, when the tree is in full bloom. The stamens of the flower produce large amounts of pollen, which is picked up by visiting insects and carried to other flowers.

The Japanese Stewartia tree also relies on wind for pollination, with the pollen sometimes being carried several feet away by a gust of wind. However, insects are the primary pollinators of this tree.

The pollinated flowers of the Japanese Stewartia tree will develop into seeds, which are encased in a woody capsule that will eventually split open to release the seeds in the fall.

Japanese Stewartia (Stewartia pseudocamellia) FAQs

What is Japanese Stewartia?

Japanese Stewartia, also known as Stewartia pseudocamellia, is a beautiful deciduous ornamental tree that is native to Japan and Korea. It is prized for its striking peeling bark, showy white camellia-like flowers, and brilliant red, orange, and yellow fall foliage.

How tall and wide does a Japanese Stewartia grow?

Japanese Stewartia trees typically grow to be 15-40 feet tall and 10-20 feet wide. They are slow-growing trees and can take several years to reach their full height and width.

What are the soil and light requirements for Japanese Stewartia?

Japanese Stewartia prefers moist, well-drained, acidic soil. It can tolerate some shade, but it grows best in full sun to light shade.

When does Japanese Stewartia bloom?

Japanese Stewartia produces showy white camellia-like flowers in late spring to early summer, usually in June or early July.

What is the care and maintenance for Japanese Stewartia?

Japanese Stewartia is a relatively low maintenance tree. It requires regular watering, especially during dry spells, and benefits from a layer of mulch to maintain moisture in the soil. Pruning should be done in late fall to early winter when the tree is dormant.

Is Japanese Stewartia susceptible to any diseases or pests?

Japanese Stewartia is susceptible to a few diseases and pests, including powdery mildew, rusts, cankers, and scale insects. Regular inspections can help prevent and address issues before they become serious problems.

Planting & Care for Japanese Stewartia

Planting

Choose a planting location that receives partial shade, particularly in the afternoon. Make sure the soil is well-draining and has a slightly acidic pH between 5.5 and 6.5. Plant Japanese Stewartia in the fall or spring when the temperatures are cooler.

1. Prepare the planting hole twice as wide and deep as the tree's root ball.
2. Remove the tree from the container and loosen any tangled roots.
3. Place the tree in the hole and fill with soil until it is level with the ground.
4. Water the tree thoroughly to settle the soil and remove any air pockets.
5. Mulch around the tree with 2-3 inches of organic mulch, keeping it away from the trunk.

Care

• Watering: Japanese Stewartia prefer consistent and evenly moist soil, but avoid overwatering or allowing the soil to become waterlogged. Water the tree deeply once a week during the growing season and reduce watering in the fall when temperatures start to cool.
• Pruning: Japanese Stewartia does not require extensive pruning, but can be shaped in early spring before new growth appears. Remove any dead, damaged, or diseased branches as necessary.
• Fertilizing: Fertilize Japanese Stewartia once a year in early spring with a balanced, slow-release fertilizer.
• Pests and Diseases: Japanese Stewartia are relatively resistant to pests and diseases, but can be susceptible to leaf spot, powdery mildew, and scale insects. Regularly inspect the tree for any signs of damage or disease and treat accordingly.

With proper care, Japanese Stewartia can live for many years and provide beautiful blooms and fall foliage.