Lobelia erinus is an annual herb that can reach heights between 100-600mm. The stems are simple or branched near the base. The leaves are clustered towards the base and about 10-23x5mm large with toothed margins. The many-flowered inflorescence have slender stems with blue and white flowers about 15mm large that are borne throughout the year.
Lobelia erinus is a very popular specimen as it flowers all year and tend to bear masses of flowers at once. It attracts many butterflies to the garden and is ideal for pots or containers, a raised bed or in a border.
It can either be an annual or perennial.