Garden Lobelia

Lobelia erinus

Its brilliant blue flowers possess ultraviolet nectar guides that are invisible to humans but act as landing strips for bees.

Scientific name
Lobelia erinus
Taxonomy
Plantae › Tracheophyta › Magnoliopsida › Asterales › Campanulaceae › Lobelia
IUCN Red List status
Least Concern
Population trend
stable
Biome
grassland
Habitat
Damp grassland slopes, rocky crevices, and coastal fynbos; widely naturalized in urban gardens.
Diet
Autotrophic (photosynthesis)
Range
South Africa, Lesotho, Eswatini, Global gardens
Size
10-15 cm tall, trailing up to 40 cm wide
Lifespan
1-2 years
Active
diurnal
Threats
Urban development in native South African habitats, though globally secure through widespread cultivation.
Safe to approach?
Harmless to touch, but defensive if consumed. The plant contains lobeline, which is highly toxic to humans, dogs, and cats if ingested. Maintain a safe distance for pets. If ingested, monitor for nausea or tremors and seek immediate medical or veterinary care.

Lobelia erinus ( edging lobelia , garden lobelia or trailing lobelia ) is a species of flowering plant in the bellflower family Campanulaceae, native to southern Africa.

Photo: Alexis Tinker-Tsavalas, CC-BY, via iNaturalist

Plain-text version: /species/f5e1dd15-488c-4c93-ba9b-894243a6030a.md