Asperula

Description

Asperula, also known as woodruff, is a genus of flowering plants in the Rubiaceae family. The genus includes over 300 species of annual and perennial herbs, shrubs, and small trees. Asperula plants are known for their delicate, star-shaped flowers and sweet, hay-like scent. These plants are native to Europe, Asia, and Africa and are commonly grown as ornamentals in gardens and landscapes.

Taxonomic Information

Domain	Eukarya
Kingdom	Plantae
Phylum	Spermatophyta
Class	Magnoliopsida
Order	Gentianales
Family	Rubiaceae
Genus	Asperula

Appearance

Asperula plants have small, lance-shaped leaves that grow in whorls around the stem. The leaves are typically green but can have a slight bluish tint. The flowers are small, star-shaped, and white or pink in color. They grow in clusters at the end of the stems and bloom from spring to early summer. Asperula plants typically reach a height of 6-12 inches and a spread of 9-12 inches.

Care Guide

Water

Asperula plants prefer moist but well-draining soil. Water regularly, especially during hot and dry periods, but avoid overwatering.

Fertilization

Fertilize Asperula plants once a month during the growing season with a balanced fertilizer.

Soil

Asperula plants prefer well-draining soil with a slightly acidic pH.

Sunlight

Asperula plants prefer partial shade to full shade.

Hardiness Zones

Asperula plants are hardy in USDA zones 4-8.

Common Pests & Diseases

Asperula plants are relatively pest-resistant but can be affected by aphids, spider mites, and whiteflies. They can also be susceptible to root rot if overwatered.

Habitat

Asperula plants are native to Europe, Asia, and Africa and are commonly found in woodlands and meadows. They prefer moist soils and partial to full shade.

Questions and Answers

Q: Can Asperula plants tolerate full sun?

A: No, Asperula plants prefer partial shade to full shade.

Q: How often should I fertilize my Asperula plant?

A: Fertilize Asperula plants once a month during the growing season with a balanced fertilizer.

Q: What are some common pests that affect Asperula plants?

A: Asperula plants can be affected by aphids, spider mites, and whiteflies.

Q: What is the hardiness zone for Asperula plants?

A: Asperula plants are hardy in USDA zones 4-8.

Related Plants

• Clematis
• Creeping Phlox
• Heuchera
• Lamium

References

• Encyclopedia of Garden Plants, Brickell, C. (Ed.). (1996). London: Dorling Kindersley.
• Woodruff, Asperula odorata. (n.d.). Retrieved from https://www.rhs.org.uk/Plants/1577/i-Asperula-odorata-i/Details
• Asperula. (n.d.). Retrieved from https://www.britannica.com/plant/Asperula