Contents
Description
Lobelia is a genus of flowering plants that belong to the Campanulaceae family. The genus has about 415 species and is widely distributed throughout the world, with most species found in tropical and subtropical regions. Lobelia plants are known for their showy flowers that come in various colors, including blue, purple, white, and pink. The flowers are typically tubular or bell-shaped and have a unique two-lipped corolla. Lobelia plants are commonly used as ornamental plants in gardens and landscapes due to their attractive flowers and foliage.
Taxonomic Information
| Domain | Eukarya |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Campanulaceae |
| Genus | Lobelia |
Appearance
The Lobelia plant has elongated leaves that are either simple or pinnate, and some species have hairy leaves. The flowers are typically tubular or bell-shaped and have a two-lipped corolla. The flowers can be blue, purple, white, or pink and can grow up to 2 inches in length. The Lobelia plant can grow up to 3 feet tall and 2 feet wide. The plant has a fibrous root system and produces capsules that contain tiny seeds.
Care Guide
The Lobelia plant requires moist, fertile soil that is well-drained. The plant prefers full sun to partial shade and requires consistent moisture to thrive. Fertilize the plant regularly with a balanced fertilizer during the growing season. The plant is hardy in zones 6-10 and can be grown as an annual in colder zones. The Lobelia plant is susceptible to root rot, so avoid overwatering. Deadhead the flowers regularly to encourage more blooms.
Common Pests & Diseases
The Lobelia plant is susceptible to pests such as aphids, spider mites, and whiteflies. The plant is also prone to diseases such as powdery mildew, root rot, and bacterial leaf spot. To prevent these issues, keep the plant in well-draining soil, avoid overwatering, and provide adequate air circulation. Use insecticidal soap or neem oil to control pests, and remove infected foliage to prevent the spread of disease.
Habitat
Lobelia plants are found in a variety of habitats, including wetlands, meadows, and woodlands. Some species of Lobelia are adapted to grow in aquatic environments and are commonly found in marshes and swamps. Other species are adapted to grow in dry, rocky environments and are commonly found on cliffs and mountainsides.
Question and Answer
Q: Can Lobelia plants be grown in containers?
A: Yes, Lobelia plants can be grown in containers as long as they have adequate drainage and are kept moist.
Q: Can Lobelia plants be grown in shade?
A: Yes, Lobelia plants can be grown in partial shade but prefer full sun to produce the most blooms.
Q: How often should Lobelia plants be fertilized?
A: Lobelia plants should be fertilized regularly with a balanced fertilizer during the growing season.
Q: What is the hardiness zone for Lobelia plants?
A: Lobelia plants are hardy in zones 6-10 and can be grown as an annual in colder zones.
Related Plants
- Cardinal flower (Lobelia cardinalis)
- Great blue lobelia (Lobelia siphilitica)
- Indian tobacco (Lobelia inflata)
- White lobelia (Lobelia squalida)
References
- https://www.gardeningknowhow.com/ornamental/flowers/lobelia/growing-lobelia.htm
- https://www.bhg.com/gardening/plant-dictionary/annual/lobelia/
- https://www.hgtv.com/outdoors/flowers-and-plants/annuals/how-to-grow-lobelia
- https://www.thespruce.com/growing-lobelia-flowers-1315877
