Pollination Information for Delavay Osmanthus (Osmanthus delavayi)

Delavay Osmanthus (Osmanthus delavayi), also commonly known as Delavay Tea Olive or Chinese Evergreen Olive, is a popular evergreen shrub or small tree native to China, Myanmar, and Vietnam. This species is a member of the Oleaceae family that also includes other popular plants like jasmine, lilac, and olive trees.

When it comes to pollination, Osmanthus delavayi is an entomophilous plant. This means that the flowers of this species are pollinated by insects, particularly bees, butterflies, and moths. The flowers have both male and female parts, making them self-fertile. However, cross-pollination with other Delavay Osmanthus plants can increase the genetic diversity of the offspring.

The flowers of Osmanthus delavayi are highly fragrant and emit a strong sweet scent that attracts pollinators. The flowers bloom in early spring, typically from March to April. The flowers are small, only about 0.25-0.5 inches long, and are arranged in clusters along the branches. The blossoms are white or cream-colored, with four petals and four sepals.

Pollination usually occurs when insects visit the flowers to gather nectar or pollen. During this process, the insects pick up pollen from the male parts of the flower and transfer it to the female parts of the same or another flower. This leads to fertilization and the formation of seedpods. The seeds of Osmanthus delavayi are small, black, and oval-shaped.

Overall, Delavay Osmanthus (Osmanthus delavayi) is an easy-to-grow ornamental plant that attracts a variety of pollinators with its fragrant flowers. This species is an excellent choice for a garden or landscape accent, thanks to its attractive evergreen foliage, attractive flowers, and pleasant scent.

Delavay Osmanthus (Osmanthus delavayi) - FAQ

What is Delavay Osmanthus?

Delavay Osmanthus (Osmanthus delavayi) is an evergreen shrub or small tree native to China. It is prized for its fragrant flowers and handsome foliage, which is leathery, dark green, and finely toothed.

What are the growing conditions for Delavay Osmanthus?

Delavay Osmanthus prefers full sun to partial shade and well-drained soil that is moist but not waterlogged. It is hardy to USDA zones 7 to 10 and can tolerate cold temperatures down to about 0°F (-18°C). It is relatively drought-tolerant once established.

How do I plant Delavay Osmanthus?

Plant Delavay Osmanthus in spring or fall. Dig a hole that is approximately twice the size of the root ball and mix in some compost or other organic matter. Place the plant in the hole at the same depth it was growing in its container and backfill with soil. Water thoroughly after planting.

How do I care for Delavay Osmanthus?

Water Delavay Osmanthus regularly, especially during hot, dry weather. Mulch around the base of the plant to conserve moisture and suppress weeds. Fertilize in early spring with a balanced fertilizer. Prune in late summer or early fall to shape the plant and remove any dead or diseased branches.

When does Delavay Osmanthus bloom?

Delavay Osmanthus blooms in late summer or early fall, producing clusters of small, fragrant white or pale yellow flowers. The flowers are followed by small, black fruits that are edible but not particularly tasty.

Can Delavay Osmanthus be grown in containers?

Delavay Osmanthus can be grown in containers, but it will require regular watering and fertilizing. Use a good-quality potting mix and a container that is at least 18 inches (45 cm) in diameter. Repot every two to three years.

Is Delavay Osmanthus deer-resistant?

Delavay Osmanthus is generally considered deer-resistant, although hungry deer may nibble on it if other food sources are scarce.

Is Delavay Osmanthus toxic?

Delavay Osmanthus is not toxic to humans, pets, or livestock.

Planting Delavay Osmanthus

Delavay Osmanthus is a slow-growing shrub that prefers well-drained soil and full to partial sun. Here are the steps to planting:

1. Choose a planting location that receives at least six hours of sunlight daily.
2. Prepare the soil by removing weeds and debris and loosening the soil to a depth of 6-8 inches.
3. Dig a hole that is the same depth as the root ball and twice as wide.
4. Place the plant in the hole so that the top of the root ball is level with the soil surface.
5. Backfill the hole with soil, firming it down around the plant.
6. Water the plant thoroughly to settle the soil.

Caring for Delavay Osmanthus

Delavay Osmanthus is a low-maintenance plant that requires minimal attention once established. However, here are the tips for caring for it:

• Water the plant deeply once a week during the growing season.
• Fertilize the plant in the spring with a slow-release fertilizer formulated for shrubs.
• Prune the shrub in late spring after it has finished blooming to maintain its shape and size.
• Protect the plant from cold winter winds to prevent damage to the foliage.