Contents
Description
Lobelia glandulosa is a flowering plant that belongs to the Campanulaceae family. It is a herbaceous perennial that grows up to 40 cm in height. The plant originates from North America and is commonly known as glandular lobelia. It has small, tubular flowers that range from light to dark blue in color. The plant blooms from mid-summer to early fall and attracts bees, butterflies, and hummingbirds.
Taxonomic Information
| Domain | Eukarya |
|---|---|
| Kingdom | Plantae |
| Phylum | Tracheophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Campanulaceae |
| Genus | Lobelia |
Appearance
Lobelia glandulosa has lance-shaped leaves that are about 4 cm long and 1 cm wide. The leaves are arranged alternately on the stem and are slightly hairy. The plant has numerous small, tubular flowers that grow in clusters at the top of the stem. The flowers are about 1 cm long and range in color from light to dark blue. The plant also produces small, oval-shaped seed pods that contain many small seeds.
Care Guide
Water
Lobelia glandulosa needs regular watering to thrive. It prefers moist soil and should be watered deeply at least once a week, especially during hot and dry weather.
Fertilization
The plant does not require much fertilization. However, a light application of a balanced fertilizer in the spring can help promote growth and blooming.
Soil
Lobelia glandulosa prefers well-draining soil that is rich in organic matter. It can tolerate a range of soil types, but it does best in slightly acidic soil with a pH of 5.5 to 6.5.
Sunlight
The plant prefers partial to full sun exposure. However, it can also tolerate some shade.
Hardiness Zones
Lobelia glandulosa is hardy in USDA zones 4 to 8.
Common Pests & Diseases
Lobelia glandulosa is generally pest and disease-free. However, it can be susceptible to aphids and spider mites. If infested, the plant can be treated with insecticidal soap or neem oil. The plant is also susceptible to fungal diseases such as powdery mildew, which can be prevented by providing good air circulation and avoiding overhead watering.
Habitat
Lobelia glandulosa is native to North America and can be found growing in wet meadows, marshes, and along stream banks. It prefers moist soil and can tolerate some flooding.
Questions and Answers
Q: Is Lobelia glandulosa poisonous?
A: Lobelia glandulosa is not poisonous, but it can cause skin irritation in some people.
Q: Can Lobelia glandulosa be grown in containers?
A: Yes, Lobelia glandulosa can be grown in containers as long as they are large enough to accommodate the plant’s roots and provide good drainage.
Q: Does Lobelia glandulosa attract bees and butterflies?
A: Yes, Lobelia glandulosa attracts bees, butterflies, and hummingbirds with its small, tubular flowers.
Q: How often should Lobelia glandulosa be fertilized?
A: Lobelia glandulosa does not require frequent fertilization. A light application of a balanced fertilizer in the spring is sufficient.
Related Plants
- Lobelia cardinalis
- Lobelia siphilitica
- Lobelia erinus
References
- “Lobelia glandulosa.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=287946&isprofile=0&pt=2.
- “Lobelia glandulosa.” North Carolina State University Extension, content.ces.ncsu.edu/lobelia-glandulosa.
- “Glandular Lobelia (Lobelia glandulosa).” Illinois Wildflowers, www.illinoiswildflowers.info/wetland/plants/gland_lobelia.htm.
