Acaena Inermis

Description

Acaena Inermis, also known as the spineless burr, is a low-growing perennial plant that is native to New Zealand. It is a member of the Rosaceae family and is known for its unique burr-like fruit that resembles a tiny burr. The plant has a spreading habit and forms a dense mat of foliage that is ideal for ground cover.

Taxonomic Information

Appearance

Acaena Inermis has finely divided green leaves that form a dense mat of foliage. The leaves are up to 3cm long and are arranged in a rosette pattern. The plant produces small, round, reddish-brown flowers that appear in summer. The flowers are followed by burr-like fruit that is approximately 1cm in diameter. The burrs are covered in small, hooked spines that cling to fur, clothing, or anything else that brushes against them.

Care Guide

Water

Acaena Inermis prefers well-draining soil that is kept consistently moist. Water the plant deeply once a week, or as needed, during the growing season. Reduce watering in winter when the plant is dormant.

Fertilization

Acaena Inermis does not require regular fertilization. However, you can apply a balanced fertilizer in spring if the plant appears to be struggling.

Soil

Acaena Inermis prefers well-draining soil that is rich in organic matter. Amend the soil with compost before planting to improve drainage and fertility.

Sunlight

Acaena Inermis prefers full sun or partial shade. However, it can tolerate full shade in hotter climates.

Hardiness Zones

Acaena Inermis is hardy in USDA zones 4-9.

Common Pests & Diseases

Acaena Inermis is generally pest and disease-resistant. However, it can be susceptible to root rot if grown in poorly draining soil.

Habitat

Acaena Inermis is native to New Zealand and is found in a range of habitats, including grasslands, forests, and wetlands. It prefers moist, well-draining soil and can tolerate a range of temperatures and rainfall levels.

Question and Answer

Q: Is Acaena Inermis invasive?

A: Acaena Inermis is not considered invasive in most areas. However, it can spread rapidly in ideal growing conditions, so it is best to monitor its growth and remove any unwanted plants.

Q: Can Acaena Inermis be grown in containers?

A: Yes, Acaena Inermis can be grown in containers as long as the soil is well-draining and the plant receives sufficient water and sunlight.

Q: How often should I prune Acaena Inermis?

A: Acaena Inermis does not require regular pruning. However, you can remove any dead or damaged foliage as needed.

Q: Can Acaena Inermis be used as a lawn alternative?

A: Yes, Acaena Inermis is an excellent lawn alternative. It forms a dense mat of foliage that can withstand foot traffic and requires minimal maintenance.

Related Plants

• Acaena Novae-Zelandiae
• Acaena Microphylla
• Acaena Saccaticupula

References

• “Acaena Inermis.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c467.
• “Acaena Inermis.” Royal Horticultural Society, www.rhs.org.uk/Plants/14266/Acaena-inermis/Details.
• “Acaena Inermis.” Gardenia.net, www.gardenia.net/plant/acaena-inermis-spineless-burr.