Raukaua

Description

Raukaua is a small genus of flowering plants in the family Goodeniaceae. It comprises six species that are native to New Zealand and South America. The name Raukaua is derived from the Maori language and is used to describe a variety of plants. Raukaua species are commonly known as ‘swamp asters’ or ‘native forget-me-nots’ and are valued for their attractive foliage, abundant flowers, and tolerance to wet soils.

Taxonomic Information

Appearance

Raukaua species are small, evergreen shrubs that grow up to 1 meter tall. The leaves are alternate, simple, and often have toothed margins. The flowers are small, usually blue or purple, and are borne on long stalks in clusters. The seeds are small and often enclosed in a capsule. Raukaua species have a bushy growth habit and are often used as groundcovers.

Care Guide

Raukaua species are easy to grow and require minimal care. They prefer moist, well-drained soil and partial shade. These plants can tolerate a wide range of soil types, but they do not like to be waterlogged. Water regularly during the growing season, but avoid overwatering. Fertilize once or twice a year with a balanced fertilizer. Raukaua species are hardy in USDA zones 8 to 10.

Common Pests & Diseases

Raukaua species are generally pest and disease-free. However, they can be susceptible to root rot in poorly drained soil. To avoid this, make sure the soil is well-drained and do not overwater. These plants can also be affected by leaf spot, which can be treated with a fungicide. Aphids and spider mites may occasionally infest Raukaua, but these pests can be controlled with insecticidal soap.

Habitat

Raukaua species are found in a variety of habitats, including wetlands, forests, and rocky areas. They are native to New Zealand and South America and are often used in landscaping as groundcovers or border plants. Raukaua species are well adapted to wet soils and can tolerate periodic flooding.

Question and Answer

Q: Can Raukaua be grown in containers?

A: Yes, Raukaua can be grown in containers as long as they are provided with adequate moisture and drainage.

Q: How often should Raukaua be fertilized?

A: Raukaua should be fertilized once or twice a year with a balanced fertilizer.

Q: Are Raukaua species invasive?

A: No, Raukaua species are not considered invasive.

Q: Can Raukaua tolerate full sun?

A: Raukaua prefers partial shade, but it can tolerate full sun in cooler climates.

Related Plants

• Goodenia
• Cooperia
• Solanum
• Mimulus

References

• “Raukaua.” New Zealand Plant Conservation Network. Accessed 16 August 2021. https://www.nzpcn.org.nz/flora/species/raukaua/
• “Raukaua.” The Plant List. Accessed 16 August 2021. http://www.theplantlist.org/1.1/browse/A/Goodeniaceae/Raukaua/
• “Raukaua.” Royal Horticultural Society. Accessed 16 August 2021. https://www.rhs.org.uk/Plants/230934/Raukaua-macrocarpa/Details