Contents
Description
Lobelia Erinus, commonly known as edging lobelia, is a flowering plant native to South Africa. It belongs to the Campanulaceae family and is a popular choice for gardeners due to its stunning blue, purple, and white flowers that bloom from spring to fall. It is a short-lived perennial that grows up to 10-20 cm tall and spreads up to 30-40 cm wide.
Taxonomic Information
| Domain | Eukaryota |
| Kingdom | Plantae |
| Phylum | Spermatophyta |
| Class | Magnoliopsida |
| Order | Asterales |
| Family | Campanulaceae |
| Genus | Lobelia |
Appearance
The Lobelia Erinus plant has narrow leaves that are dark green in color and grow up to 2-3 cm long. Its flowers are small and tubular-shaped, with five petals that form a lobed lower lip and a straight upper lip. The flowers bloom in clusters and are typically blue, purple, or white in color. In some cases, the flowers may also have pink, red, or violet hues. The plant’s stems are thin and wiry and may produce small seed pods that can be used for propagation.
Care Guide
Water: Lobelia Erinus plants require regular watering, especially during the hot summer months. The soil should be kept moist but not waterlogged, as this can lead to root rot.
Fertilization: It is recommended to fertilize Lobelia Erinus plants every two weeks during the growing season with a balanced fertilizer. This will help promote healthy growth and vibrant blooms.
Soil: The soil should be well-draining and rich in organic matter. A pH level of 5.5-7.0 is ideal for this plant.
Sunlight: Lobelia Erinus plants prefer full sun to partial shade. In areas with hot summers, it is best to provide some afternoon shade to prevent the plant from wilting.
Hardiness Zones: Lobelia Erinus is hardy in USDA zones 9-11. In colder regions, it can be grown as an annual or overwintered indoors.
Common Pests & Diseases
Lobelia Erinus plants are susceptible to a few pests and diseases, including aphids, whiteflies, spider mites, and powdery mildew. To prevent these issues, it is important to keep the plant well-watered and fertilized and to remove any diseased or damaged leaves or flowers. In severe cases, insecticidal soap or fungicide may be necessary.
Habitat
Lobelia Erinus is native to South Africa and is commonly found in rocky, dry areas. It grows well in a variety of soil types and can tolerate drought conditions. In cultivation, it is often used as an edging plant or in container gardens due to its compact size and colorful flowers.
Question and Answer
Q: Can Lobelia Erinus be grown indoors?
A: Yes, Lobelia Erinus can be grown indoors as a houseplant, but it requires bright, indirect light and consistent moisture.
Q: How often should I fertilize my Lobelia Erinus plant?
A: It is recommended to fertilize Lobelia Erinus plants every two weeks during the growing season with a balanced fertilizer.
Q: What is the ideal pH level for Lobelia Erinus soil?
A: A pH level of 5.5-7.0 is ideal for Lobelia Erinus soil.
Q: How do I propagate Lobelia Erinus?
A: Lobelia Erinus can be propagated by seed or by taking stem cuttings in the spring or summer.
Related Plants
- Lobelia cardinalis
- Lobelia siphilitica
- Lobelia tupa
- Lobelia laxiflora
References
- “Lobelia erinus (edging lobelia)”. Royal Horticultural Society. https://www.rhs.org.uk/plants/5912/lobelia-erinus/details
- “Lobelia erinus”. Missouri Botanical Garden. https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b928
- “Lobelia erinus”. PlantZAfrica. http://pza.sanbi.org/lobelia-erinus
