About
A vigorous, branching annual up to 15cm x 30cm with semi-trailing stems, tiny, dark green leaves and dark blue flowers with a large, white, central splash.
About the genus
Lobelia can be annuals, perennials or shrubs, with simple leaves and showy 2-lipped flowers that may be solitary or in racemes or panicles
Growing conditions
SunlightFull sun, Partial shade
Soil typeLoam, Sand
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectWest-facing, East-facing, South-facing, North-facing
ExposureExposed, Sheltered
UK hardinessH2
Plant details
Plant typeAnnual Biennial, Bedding
HabitTrailing
FoliageDeciduous
Height0.1-0.5 metres
Spread0.1-0.5 metres
Time to full height1 year
Suggested usesPatio and container plants, City and courtyard gardens, Coastal, Cottage and informal garden
Care notes
CultivationGrow in deep, fertile, reliably moist soil in full sun or partial shade. Apply a balanced fertilizer every two weeks during spring and early summer and a nitrogen-free fertilizer every two weeks from mid-summer onwards
PruningNo pruning required
PropagationPropagate by cuttings - does not set seed
Pest resistanceMay be susceptible to slugs
Disease resistanceGenerally disease-free