Lobelia × speciosa 'Fan Scharlach' (Fan Series)

RHS Plant Profile

lobelia 'Fan Scharlach'

Synonyms

Lobelia 'Cinnabar Red', Lobelia 'Fan Scharlach', Lobelia [Fan Scarlet], Lobelia speciosa 'Fan Deep Scarlet', Lobelia speciosa 'Fan Scarlet'

Annual Biennial Bedding

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A perennial, usually grown as an annual, with bronze-green, oblong leaves and leafy racemes of rich scarlet flowers in summer and autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1–2 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained or Poorly–drained
pH: Acid or Alkaline or Neutral

Position

Full sun Partial shade

Aspect: South–facing or North–facing or West–facing or East–facing
Exposure: Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H5

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Campanulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Potentially harmful: Harmful if eaten; skin irritant. Wear gloves and other protective equipment when handling. Pets: Harmful if eaten; skin irritant. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
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
Name Status: Accepted

How to Grow

Cultivation

Grow in deep, fertile, reliably moist soil in full sun or partial shade. Feed with a balanced liquid fertilizer every two weeks until mid-summer and a low nitrogen fertilizer from then on

Propagation

Propagate by seed sown at 15-18°C in late winter

Suggested planting locations and garden types

Cottage and informal garden
Flower borders and beds

Pruning

Cut back after flowering

Pests

May be susceptible to slugs

Diseases

Generally disease-free