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.
Cultivars Numerous
cultivars have been selected, either with a bushy or a trailing habit, in a wide range of flower colours, including white, pink, magenta ("red"), pale to dark blue, and purple, often with a prominent white eye. Some of the better known cultivars include 'Blue Moon', 'Gracilis', 'Crystal Palace', 'Sapphire', 'Rosamund' and 'Riviera Rose'. • 'Cambridge Blue' • 'Regatta Midnight Blue'{{cite web | url = https://www.rhs.org.uk/Plants/137378/i-Lobelia-erinus-i-Regatta-Midnight-Blue/Details • 'Regatta Sky Blue'{{cite web | url = https://www.rhs.org.uk/Plants/137383/i-Lobelia-erinus-i-Regatta-Sky-Blue/Details • 'Richardii' syn.
Lobelia richardsonii{{cite web | url = https://www.rhs.org.uk/Plants/67924/i-Lobelia-richardsonii-i-hort/Details • 'Riviera Blue Eyes'{{cite web | url = https://www.rhs.org.uk/Plants/137379/i-Lobelia-erinus-i-Riviera-Blue-Eyes/Details • 'String of Pearls'{{cite web | url = https://www.rhs.org.uk/Plants/137380/i-Lobelia-erinus-i-String-of-Pearls/Details • =‘Lobstrahob’{{cite web | url = https://www.rhs.org.uk/Plants/317711/i-Lobelia-erinus-i-Font-Face-times-New-Roman-Techno-Heat-Trailing-Light-Blue-Improved-FONT-Lobstrahob-sup-(PBR)-sup-(Techno-Heat-Series)/Details • =‘Balobwablu’ (Waterfall Series){{cite web | url = https://www.rhs.org.uk/Plants/310834/i-Lobelia-erinus-i-Font-Face-times-New-Roman-Waterfall-Blue-FONT-Balobwablu-sup-(PBR)-sup-(Waterfall-Series)/Details ==Gallery==