Edging lobelia is a low, trailing plant grown as a half-hardy annual for edging beds, hanging baskets and window boxes, with blue, violet, white or pink flowers. It needs cool-season sowing indoors and planting out after frost, and it does best with regular moisture in part sun.
Family
Campanulaceae (Campanul family)
Grows as
Shrub
Light
Full sun, Part shade
Water
Keep the soil evenly moist and water containers regularly, especially in hot weather.
Soil
Moist, fertile, well-drained potting mix or garden soil.
Temperature
10–24 °C; protect below 2 °C
How easy
Easy
Native range
Trop. & S. Africa
Climate
subtropical
About
Lobelia erinus (edging lobelia, garden lobelia or trailing lobelia) is a species of flowering plant in the bellflower family Campanulaceae, native to southern Africa.
How to grow it
Lobelia erinus is a very popular edging plant in gardens, especially for hanging baskets and window boxes. In temperate zones it is grown as a half-hardy annual, i.e. sown under glass with some heat in spring, then planted out when all danger of frost has passed. Alternatively plants can be purchased from garden centres as young "plug" plants, to be transferred outside in May or June.
Where it grows
The distribution area lies in southern Africa and extends from Malawi, Mozambique, Zambia and Zimbabwe to the south to Botswana, Namibia, Eswatini, Lesotho and the South African provinces. L. erinus also occurs as a weed where it has escaped from cultivation.
Text excerpted from the Wikipedia article Lobelia erinus by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.