Doronicum Grandiflorum

Description

Doronicum grandiflorum, commonly known as leopard’s bane or Siberian leopard’s bane, is a herbaceous perennial belonging to the Asteraceae family. It is native to Europe and Asia and produces showy yellow flowers that bloom in the late spring and early summer. The plant can grow up to 2 feet tall and 1 foot wide, with large green leaves and a bushy appearance.

Taxonomic Information

Appearance

Doronicum grandiflorum has large oval-shaped leaves that can grow up to 8 inches long and 4 inches wide. The leaves are dark green and slightly hairy, with a toothed edge. The plant produces bright yellow daisy-like flowers that grow up to 3 inches in diameter and have a central disk surrounded by numerous petals. The flowers bloom in clusters on top of tall, sturdy stems that can grow up to 2 feet tall. The plant’s root system is shallow and fibrous.

Care Guide

Doronicum grandiflorum is a relatively low-maintenance plant that requires moderate watering and occasional fertilization. The plant prefers well-drained soil that is rich in organic matter, and it thrives in full sun to partial shade. It is hardy in USDA zones 4-8 and can withstand temperatures as low as -30°F.

Water

Doronicum grandiflorum requires moderate watering, with the soil kept consistently moist but not waterlogged. During the summer months, the plant may require more frequent watering to prevent drought stress.

Fertilization

The plant can benefit from occasional fertilization with a balanced, all-purpose fertilizer. Apply the fertilizer in the early spring and again in the late summer or early fall.

Soil

Doronicum grandiflorum prefers well-drained soil that is rich in organic matter. The plant can tolerate a range of soil types, including sandy, loamy, and clay soils.

Sunlight

The plant thrives in full sun to partial shade, with at least 4-6 hours of direct sunlight per day.

Hardiness Zones

Doronicum grandiflorum is hardy in USDA zones 4-8.

Common Pests & Diseases

Doronicum grandiflorum is relatively pest and disease-free but can be susceptible to powdery mildew and fungal leaf spots. Insect pests such as aphids, spider mites, and slugs may also infest the plant.

Habitat

Doronicum grandiflorum is native to Europe and Asia and can be found growing in meadows, woodland edges, and along riverbanks. It prefers moist, well-drained soil and can tolerate a range of growing conditions.

Question and Answer

Q: What is the best time to plant Doronicum grandiflorum?

A: The best time to plant Doronicum grandiflorum is in the early spring or fall when the weather is cool and moist.

Q: How often should I fertilize Doronicum grandiflorum?

A: The plant can benefit from occasional fertilization with a balanced, all-purpose fertilizer. Apply the fertilizer in the early spring and again in the late summer or early fall.

Q: What is the ideal growing condition for Doronicum grandiflorum?

A: The plant prefers well-drained soil that is rich in organic matter, and it thrives in full sun to partial shade. It is hardy in USDA zones 4-8 and can withstand temperatures as low as -30°F.

Q: How do I prevent powdery mildew on Doronicum grandiflorum?

A: To prevent powdery mildew, ensure adequate air circulation around the plant and avoid overhead watering. Use a fungicidal spray if necessary.

Related Plants

• Doronicum caucasicum
• Doronicum orientale
• Doronicum pardalianches
• Doronicum plantagineum

References

• “Doronicum grandiflorum.” Missouri Botanical Garden. Accessed August 27, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=291959.
• “Doronicum grandiflorum.” Royal Horticultural Society. Accessed August 27, 2021. https://www.rhs.org.uk/Plants/11667/Doronicum-grandiflorum/Details.
• “Doronicum grandiflorum.” Plant Finder. Accessed August 27, 2021. https://www.plantdelights.com/products/doronicum-grandiflorum.