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Description
Kerria Japonica Pleniflora, also known as Double-Flowered Japanese Kerria, is a deciduous shrub that belongs to the Rosaceae family. It is native to Japan but is widely cultivated in many parts of the world because of its attractive, double yellow flowers that bloom in spring. The plant grows up to 10 feet tall and 8 feet wide, and its arching branches form a vase-like shape. The stems are green and have a zigzag pattern, while the leaves are dark green and toothed. The plant produces small, round, green fruits that turn brown as they mature.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Rosales |
| Family | Rosaceae |
| Genus | Kerria |
Appearance
The Kerria Japonica Pleniflora is a beautiful shrub that adds a splash of color to any garden. Its double yellow flowers are a sight to behold and can reach up to 2 inches in diameter. The flowers bloom in spring and continue to do so throughout the summer. The plant’s leaves are dark green and oval-shaped, and they grow up to 3 inches long. The stems are slender and arching, and they have a zigzag pattern that adds interest to the plant’s overall appearance. The plant’s fruits are small, round, and turn brown as they mature, adding another layer of interest to the plant.
Care Guide
The Kerria Japonica Pleniflora is easy to grow and maintain. Here are some care tips:
- Water: The plant needs regular watering during the growing season. Make sure the soil is moist but not waterlogged.
- Fertilization: Fertilize the plant in early spring with a balanced fertilizer. Repeat the process every six weeks until late summer.
- Soil: The plant prefers well-draining soil that is rich in organic matter.
- Sunlight: The plant thrives in partial shade but can also tolerate full sun. Avoid planting it in areas with strong winds.
- Hardiness Zones: The plant can grow in USDA hardiness zones 5 to 9.
Common Pests & Diseases
The Kerria Japonica Pleniflora is generally pest and disease-free. However, it may be susceptible to the following:
- Aphids: These small insects can cause damage to the plant’s leaves and stems. Use insecticidal soap to get rid of them.
- Scale insects: These insects are hard to spot and can cause yellowing of the plant’s leaves. Use horticultural oil to control them.
- Powdery mildew: This fungal disease can cause powdery white spots on the plant’s leaves. Use a fungicide to control it.
Habitat
The Kerria Japonica Pleniflora is native to Japan but is widely grown in many parts of the world. It thrives in partial shade and prefers well-draining soil that is rich in organic matter. The plant can tolerate a wide range of temperatures but is best grown in USDA hardiness zones 5 to 9.
Question and Answer
Q: Is the Kerria Japonica Pleniflora a fast-growing plant?
A: Yes, the plant can grow up to 2-3 feet per year.
Q: Can the Kerria Japonica Pleniflora be grown in containers?
A: Yes, the plant can be grown in containers as long as they are large enough to accommodate its size.
Q: How often should I fertilize the Kerria Japonica Pleniflora?
A: Fertilize the plant in early spring and repeat the process every six weeks until late summer.
Q: How do I prune the Kerria Japonica Pleniflora?
A: Prune the plant after it has finished flowering. Cut back the stems to a third of their length to promote new growth.
Related Plants
- Kerria Japonica
- Kerria Japonica ‘Golden Guinea’
- Kerria Japonica ‘Albescens’
References
- “Kerria japonica.” Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=286674&isprofile=1&basic=kerria%20japonica
- “Kerria japonica.” Royal Horticultural Society. https://www.rhs.org.uk/plants/17445/kerria-japonica/details
- “Kerria japonica ‘Pleniflora’.” Gardenia. https://www.gardenia.net/plant/kerria-japonica-pleniflora-double-flowered-japanese-kerria
