Parthenocissus

Description

Parthenocissus is a genus of woody vines in the grape family, Vitaceae. The name Parthenocissus means “virgin ivy” and refers to the fact that it does not produce fruits. However, it is grown for its beautiful foliage and is commonly used to cover walls, trellises, and fences.

Taxonomic Information

Appearance

Parthenocissus has attractive foliage that changes color throughout the seasons. In spring, the new leaves are reddish-bronze, which then turns to green in the summer. In the fall, the leaves turn shades of red, orange, and yellow, making it a popular plant for autumn landscapes. The leaves are palmate with five leaflets and can grow up to 20 cm in length. The plant also produces small greenish flowers in the summer, but they are not showy.

Care Guide

Parthenocissus is a low maintenance plant that can grow in a variety of conditions. Here are some tips for taking care of Parthenocissus:

• Water: Water the plant regularly, especially during dry periods.
• Fertilization: Fertilize the plant once a year in the spring with a balanced fertilizer.
• Soil: Plant Parthenocissus in well-draining soil that is rich in organic matter.
• Sunlight: The plant prefers full sun to partial shade.
• Hardiness Zones: Parthenocissus can grow in hardiness zones 4 to 9.

Common Pests & Diseases

Parthenocissus is generally resistant to pests and diseases. However, it can occasionally be affected by the following:

• Japanese beetles: These beetles can defoliate a plant, leaving it vulnerable to other pests and diseases.
• Aphids: These tiny insects can suck sap from the plant, causing leaves to curl and turn yellow.
• Powdery mildew: This fungal disease can cause a white, powdery coating on the leaves.

To prevent these issues, make sure to keep the plant healthy and well watered. You can also use insecticidal soap or neem oil to control pests.

Habitat

Parthenocissus is native to eastern Asia and North America. It grows in a variety of habitats including forests, woodlands, and rocky areas. It is commonly used in landscaping as a climbing vine, where it can cover walls, trellises, and fences.

Question and Answer

Q: Can Parthenocissus grow in shade?

A: Yes, Parthenocissus can grow in partial shade, but it prefers full sun.

Q: How fast does Parthenocissus grow?

A: Parthenocissus can grow up to 20 feet in one season.

Q: Does Parthenocissus need support to grow?

A: Yes, Parthenocissus is a climbing vine and needs support to grow vertically.

Q: Is Parthenocissus poisonous to humans or pets?

A: No, Parthenocissus is not toxic to humans or pets.

Related Plants

• Vitis (grapevine)
• Ampelopsis (porcelain berry)
• Celastrus (bittersweet)
• Hedera (ivy)

References

• Dirr, M. A. (2009). Manual of woody landscape plants: Their identification, ornamental characteristics, culture, propagation and uses. Timber Press.
• Gilman, E. F. (1997). Trees for urban and suburban landscapes. Delmar Publishers.
• Missouri Botanical Garden. (n.d.). Parthenocissus. Retrieved from https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c660