Columnea

Description

Columnea is a genus of flowering plants in the Gesneriaceae family, native to Central and South America. The genus contains around 200 species of epiphytic or lithophytic plants, with some species being cultivated as houseplants due to their bright, showy flowers.

Taxonomic Information

Appearance

Columnea plants have elongated, trailing stems that can reach up to 3 feet in length. The leaves are typically small and glossy, and range in color from deep green to bronze. The flowers are tubular in shape and come in a range of colors, including red, orange, yellow, and pink. Some species also have distinctive markings on the petals, such as spots or stripes.

Care Guide

Water: Columnea plants prefer to be kept evenly moist, but not waterlogged. Water thoroughly when the soil surface feels dry to the touch, and make sure to empty any excess water from the saucer beneath the pot.

Fertilization: Feed Columnea plants every 2-3 weeks during the growing season with a balanced, water-soluble fertilizer. Reduce feeding in the winter months.

Soil: Columnea plants prefer a well-draining soil mix that is rich in organic matter. A mix of peat moss, perlite, and vermiculite is a good option.

Sunlight: Columnea plants prefer bright, indirect light. Avoid direct sunlight, which can scorch the leaves.

Hardiness Zones: Columnea plants are typically grown as houseplants and are not hardy outdoors. They prefer temperatures between 60-80°F.

Common Pests & Diseases

Columnea plants can be susceptible to mealybugs and spider mites. To prevent infestations, regularly inspect the plant for signs of pests and treat as necessary with an insecticidal soap or neem oil. Columnea plants can also be prone to root rot if overwatered or if the soil does not drain well.

Habitat

Columnea plants are native to Central and South America, where they grow as epiphytes or lithophytes in humid, tropical environments. They are often found growing on trees or rocks in the understory of the forest.

Question and Answer

Q: How often should I water my Columnea plant?

A: Water your Columnea plant thoroughly when the soil surface feels dry to the touch, typically every 7-10 days.

Q: Can I propagate my Columnea plant?

A: Yes, Columnea plants can be propagated from stem cuttings taken in the spring or summer. Dip the cut end in rooting hormone and plant in a well-draining soil mix.

Q: Can I grow Columnea plants outdoors?

A: Columnea plants are typically grown as houseplants and are not hardy outdoors. They prefer temperatures between 60-80°F.

Q: How often should I fertilize my Columnea plant?

A: Feed Columnea plants every 2-3 weeks during the growing season with a balanced, water-soluble fertilizer. Reduce feeding in the winter months.

Related Plants

• Achimenes
• Episcia
• Gloxinia
• Streptocarpus

References

• Flowers of India. (n.d.). Columnea microphylla. Retrieved from http://www.flowersofindia.net/catalog/slides/Small%20Leaved%20Columnea.html
• Gardening Know How. (2019). Columnea Plant Care – Tips For Growing A Goldfish Plant. Retrieved from https://www.gardeningknowhow.com/houseplants/goldfish-plant/columnea-plant-care.htm
• Missouri Botanical Garden. (n.d.). Columnea. Retrieved from http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b750