Zantedeschia

Description

Zantedeschia, also known as Calla Lily or Arum Lily, is a genus of flowering plants native to southern Africa. It belongs to the family Araceae and consists of eight species. The most popular species is Zantedeschia aethiopica, which is widely cultivated as an ornamental plant for its beautiful flowers and attractive foliage.

Taxonomic Information

Appearance

Zantedeschia plants have large, heart-shaped leaves that grow up to 18 inches long and 12 inches wide. The flowers are trumpet-shaped and come in a variety of colors, including white, pink, yellow, orange, and red. The flowers are surrounded by a white or yellow bract, which is often mistaken for a petal. Zantedeschia flowers bloom in late spring or early summer and last for several weeks.

Care Guide

Zantedeschia plants are easy to care for and can be grown both indoors and outdoors. Here are some tips on how to care for your Zantedeschia:

• Water: Keep the soil evenly moist, but not waterlogged. Water the plant when the top inch of soil feels dry to the touch.
• Fertilization: Fertilize the plant every two weeks during the growing season with a balanced fertilizer.
• Soil: Use a well-draining soil mix that is rich in organic matter. Zantedeschia plants prefer slightly acidic soil with a pH of 6.0 to 6.5.
• Sunlight: Zantedeschia plants prefer bright, indirect sunlight. Avoid exposing the plant to direct sunlight, as this can burn the leaves.
• Hardiness Zones: Zantedeschia plants are hardy in USDA zones 8 to 11. If you live in a colder climate, you can grow the plant as an annual or overwinter it indoors.

Common Pests & Diseases

Zantedeschia plants are relatively pest and disease-resistant, but they can be susceptible to the following:

• Aphids: These tiny insects feed on the sap of the plant and can cause stunted growth and distorted leaves. Use insecticidal soap to control aphids.
• Spider mites: These pests can cause yellowing of the leaves and the appearance of fine webs on the plant. Use a miticide to control spider mites.
• Root rot: Overwatering or poorly-draining soil can cause root rot, which can be fatal to the plant. To prevent root rot, make sure the soil is well-draining and don’t let the plant sit in water.

Habitat

Zantedeschia plants are native to southern Africa and can be found growing in wetlands, marshes, and along streams and rivers. They prefer moist soil and can tolerate partial shade.

Question and Answer

Q: Can Zantedeschia plants be grown indoors?

A: Yes, Zantedeschia plants can be grown indoors as long as they are placed in a bright, indirect light and are watered regularly.

Q: How often should I fertilize my Zantedeschia plant?

A: You should fertilize your Zantedeschia plant every two weeks during the growing season with a balanced fertilizer.

Q: What is the best way to propagate Zantedeschia plants?

A: Zantedeschia plants can be propagated by dividing the rhizomes in the spring or fall.

Q: What is the hardiness zone for Zantedeschia plants?

A: Zantedeschia plants are hardy in USDA zones 8 to 11.

Related Plants

• Araceae family
• Colocasia
• Alocasia
• Anthurium
• Caladium

References

• “Calla Lily (Zantedeschia aethiopica).” Missouri Botanical Garden. Accessed September 25, 2021. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=c460.
• “Zantedeschia.” University of Florida IFAS Extension. Published March 2017. Accessed September 25, 2021. https://edis.ifas.ufl.edu/pdffiles/FP/FP18600.pdf.
• “Zantedeschia.” Royal Horticultural Society. Accessed September 25, 2021. https://www.rhs.org.uk/Plants/18894/Zantedeschia/Details.