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Lobelia cardinalis

Scarlet lobelia

Garden

Wishlist

  • Lobelia cardinalis | Copyright Greenplantswap 2019

Features

  • BloomsJuly to October
  • Height0.6m to 1m
  • Spread0.15m to 0.3m
  • Growth HabitClump
  • Flower ColourBright red
  • Leaf ColourBronze red
  • AwardsRHS Garden Merit

Description

Lobelia cardinalis (Scarlet lobelia). They will produce upright spikes of red flowers, it is a clump forming perennial and will grow in wet areas. It will bloom from late summer to mid-autumn. It will grow well in full sun or partial shade in humus-rich, sandy, moist but well drained soil, Shade is essential in warm climates.

Characteristics

Perennial, Deciduous, Semi-aquatic

Origin

N.America

Interest and use

Border, container, naturaliser, wildflower/meadow, bog Attracts humming birds in suitable geographical locations.

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  • Lobelia cardinalis | Copyright Greenplantswap 2019

Needs

  • LightFull sun
  • HardinessHardy (min -10°C)
  • SoilClay, Humus-rich
  • Soil pH7.0
  • WaterSemi-moist or Moist

Cultivation

These frost-hardy to somewhat frost-tender plants are best grown in well-drained, moist, light loam enriched with animal manure or compost. Most grow in sun or part-shade but resent wet conditions in winter. Prune after the first flush of flowers to encourage repeat flowering, and fertilize weekly with a liquid manure during the season. Propagate annuals from seed in spring, perennial species from seed or by division in spring or autumn and perennial cultivars by division only. Transplant from late autumn until early spring.

Propagation

Divide clumps

Pests, diseases or disorders

Prone to leaf blotch.

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