Calocephalus

Description

Calocephalus is a genus of plants in the Asteraceae family, native to Australia and New Zealand. Commonly known as cushion bush or silver bush, Calocephalus is a unique plant with a distinctive appearance that makes it a popular choice for gardens and containers.

Taxonomic Information

Appearance

Calocephalus is a small, bushy plant that grows up to 30cm in height and width. It has silver-grey foliage that is covered in fine hairs, giving it a fuzzy appearance. The leaves are small, narrow and pointed, and are arranged in a dense, cushion-like shape. In summer, Calocephalus produces small, yellow flowers that are not particularly showy, but add a pop of color to the plant.

Care Guide

To keep Calocephalus healthy and thriving, it is important to provide it with the right care. Here are some tips on how to care for this unique plant:

Water:

Calocephalus prefers well-draining soil that is kept evenly moist. Water the plant when the top inch of soil feels dry to the touch, but be careful not to overwater as this can cause root rot.

Fertilization:

Calocephalus does not require much fertilization, but you can feed it with a balanced, water-soluble fertilizer once a month during the growing season.

Soil:

Calocephalus prefers well-draining soil that is slightly acidic with a pH between 5.5 and 6.5. You can use a commercial potting mix that is formulated for succulents and cacti.

Sunlight:

Calocephalus prefers full sun or partial shade. It can tolerate some shade, but too much shade can cause the plant to become leggy and lose its shape.

Hardiness Zones:

Calocephalus is hardy in USDA zones 8-11, meaning it can tolerate temperatures as low as 10°F/-12°C.

Common Pests & Diseases

Calocephalus is relatively pest and disease-free, but it can be susceptible to mealybugs and spider mites. These pests can be treated with insecticidal soap or neem oil. Overwatering can lead to root rot, while underwatering can cause the plant to dry out and become stunted.

Habitat

Calocephalus is native to Australia and New Zealand, where it grows in rocky, sandy soils in coastal areas. It is adapted to dry, arid conditions and can tolerate salt spray and wind.

Question and Answer

Q: Can Calocephalus be grown indoors?

A: Yes, Calocephalus can be grown indoors as long as it is placed in a sunny window and provided with well-draining soil and proper watering.

Q: How often should I water Calocephalus?

A: Water Calocephalus when the top inch of soil feels dry to the touch. This could be once a week or once every two weeks, depending on the conditions in your area.

Q: Does Calocephalus require pruning?

A: Calocephalus does not require pruning, but you can trim back any dead or yellowing foliage to maintain its shape.

Q: How can I propagate Calocephalus?

A: Calocephalus can be propagated from stem cuttings or by division. Take stem cuttings in the spring or early summer and root them in well-draining soil. To divide the plant, gently separate the roots and replant in a new container.

Related Plants

Here are some plants that are related to Calocephalus:

• Artemisia
• Lavandula
• Santolina
• Senecio

References

• “Calocephalus brownii.” Missouri Botanical Garden. http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=d348
• “Calocephalus.” Royal Horticultural Society. https://www.rhs.org.uk/plants/106749/calocephalus/Details
• “Calocephalus brownii.” Plant Care Today. https://plantcaretoday.com/calocephalus-brownii.html