Pollination Information for Kousa Dogwood (Cornus kousa)

Kousa dogwood (Cornus kousa) is a small, deciduous tree native to Asia. It is known for its beautiful, showy flowers that bloom in late spring to early summer. The flowers are surrounded by four large, creamy white bracts that give the appearance of a single, large flower.

Pollination Process

The pollination process of Kousa dogwood involves both wind and insects. The tree has both male and female flowers on the same plant, but they are not self-fertile. In order to produce fruit, the pollen must be transferred from the male flowers to the female flowers.

Insect Pollinators

The main insect pollinators of Kousa dogwood are bees and flies. They are attracted to the flowers by their nectar and pollen. As they move from one flower to another, they transfer pollen from the male flowers to the female flowers, fertilizing them and allowing them to develop into fruit.

Wind Pollination

Although insect pollination is more common, Kousa dogwood can also be wind-pollinated. The male flowers produce abundant pollen that is carried by the wind to the female flowers. However, wind pollination is not as reliable as insect pollination and may result in lower fruit production.

Fruit Production

After successful pollination, Kousa dogwood produces red or pink, fleshy fruit that is edible, but not particularly tasty. The fruit is often used for making jams and jellies, or left on the tree for birds to eat.

Pollination Importance

Overall, pollination is crucial for the health and survival of Kousa dogwood trees. Without proper pollination, they will not produce fruit, which can impact their ability to reproduce and provide food for wildlife.

Kousa Dogwood (Cornus kousa) FAQs

1. What is Kousa Dogwood?

Kousa Dogwood is a small to medium-sized deciduous tree native to Eastern Asia, including Japan, Korea, and China. It is primarily grown for its attractive and showy flowers and fruits, which resemble strawberries.

2. What are the characteristics of Kousa Dogwood?

Kousa Dogwood grows up to 25 feet in height with a spread of up to 30 feet. It produces large, showy, white or pink flowers in late spring to early summer, followed by bright red, edible fruits that ripen in fall. The leaves are medium green in color, turning to reddish purple in fall.

3. Where can I plant Kousa Dogwood?

Kousa Dogwood can be planted in moist, well-drained soil in full sun to partial shade. It can adapt to various soil types, but prefers moist, slightly acidic soil. It is tolerant to drought and heat.

4. What are the benefits of planting Kousa Dogwood?

Kousa Dogwood is an excellent landscape tree that provides year-round interest. Its beautiful flowers and fruits attract birds and butterflies. It is also resistant to many common diseases and pests that affect other dogwood species.

5. How do I care for Kousa Dogwood?

Kousa Dogwood requires regular watering during the first few years of planting to ensure proper growth and establishment. Fertilize with a slow-release fertilizer in early spring. Prune in late winter or early spring to remove any dead, damaged, or diseased branches.

6. Is Kousa Dogwood susceptible to any diseases or pests?

Kousa Dogwood is generally resistant to most common dogwood diseases, such as powdery mildew, anthracnose, and canker. However, it can be susceptible to leaf spot diseases and insect pests, such as scale and borers. Proper care, including regular watering and pruning, can help prevent these issues.

7. When is the best time to plant Kousa Dogwood?

The best time to plant Kousa Dogwood is in the fall or early spring, when the soil is moist and cool. Avoid planting during extreme temperatures or drought periods.

8. Can I eat the fruits of Kousa Dogwood?

Yes, the bright red fruits of Kousa Dogwood are edible and can be used to make jams, jellies, and other treats. They are similar in taste and texture to strawberries.

9. How do I propagate Kousa Dogwood?

Kousa Dogwood can be propagated by seeds or cuttings. Seeds should be stratified in moist sand for 3 to 4 months before planting in the spring. Cuttings should be taken in late summer or early fall and rooted under mist and heat.

10. How long does Kousa Dogwood live?

Kousa Dogwood can live up to 80 years or more with proper care and maintenance.

Planting & Care for Kousa Dogwood (Cornus kousa)

Planting

1. Choose a location with well-draining soil and partial shade to full sun exposure.
2. Dig a hole that is twice as wide and as deep as the root ball.
3. Loosen the soil at the bottom of the hole and add some organic matter, like compost, to promote healthy root growth.
4. Place the root ball in the hole and backfill with soil, ensuring that the top of the root ball is level with the surrounding soil.
5. Water the plant thoroughly and apply mulch around the base, but not touching the trunk, to conserve moisture and suppress weeds.
6. Water regularly, especially during hot, dry weather.

Care

• Prune in late winter to early spring to remove any dead or diseased wood and to shape the plant as desired.
• Fertilize in spring with a balanced, slow-release fertilizer.
• Water regularly, especially during hot, dry weather.
• Monitor for pests and diseases, like dogwood anthracnose and borers, and treat promptly if detected.

Tips

• Kousa dogwoods can be grown as a single specimen or in a group to create a stunning display.
• Consider planting near a patio or deck to enjoy the beautiful flowers and fall foliage.
• Avoid planting near roadsides or areas with heavy salt exposure, as kousa dogwood is sensitive to salt spray.