Lobelia × speciosa [Starship Deep Rose] ('Pas905518') (Starship Series)

RHS Plant Profile

lobelia [Starship Deep Rose]

RHS

Synonyms

Lobelia × speciosa 'Pas905518', Lobelia × speciosa 'Starship Deep Rose' (Starship Series)

Herbaceous Perennial

Buy this from Plant Nurseries
10 Suppliers

An upright, clump-forming herbaceous perennial, often grown as an annual, with ovate - elongate dark green leaves and black stems bearing terminal spikes of somewhat contrasting two-lipped, tubular reddish-pink flowers from summer to autumn.

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.5-1 metres
Max Height: 0.5-1 metres

Growing Conditions

Chalk Clay Loam Sand

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

Position

Full sun Partial shade

Aspect: North–facing or South–facing or East–facing or West–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): H4

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: Trade

How to Grow

Cultivation

Grow in deep, rich moisture-retentive soil in sun or partial shade. Feed with liquid fertilizer until flowering and low nitrogen during the rest of the season.

Propagation

Propagate by seed. Seed can be sown in very early spring. Seed may not come true to type

Suggested planting locations and garden types

City and courtyard gardens
Coastal
Cottage and informal garden
Patio and container plants
Flower borders and beds

Pruning

Cut back after flowering

Pests

May be susceptible to slugs

Diseases

May be susceptible to crown rot