Canna 'Stuttgart' (v)

RHS Plant Profile

canna 'Stuttgart'

Synonyms

Canna 'Striata' misapplied

Herbaceous Perennial

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Imposing clump-forming perennial, this is one of the tallest cannas and can reach 2.5m where conditions suit it. The large, grey-green leaves are boldly marked and striped with white, and it bears light orange flowers from summer into autumn

Position

Partial shade

Soil Types

Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 1-1.5 metres
Max Height: 1.5-2.5 metres

Growing Conditions

Loam Sand

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

Position

Partial shade

Aspect: South–facing or West–facing
Exposure: 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): H3

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Cannaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Clump forming
Genus: Canna are rhizomatous herbaceous perennials with erect stems bearing ovate leaves, with showy flowers with showy petal-like staminodes and small, coloured petals and sepals, borne in racemes or panicles in summer and autumn
Name Status: Accepted

How to Grow

Cultivation

Grow in a border or container in a sheltered, lightly shaded site. Water freely in dry spells and apply a balanced liquid feed monthly. In cold regions, lift the rhizomes in autumn once frost has blackened the foliage and store in barely moist compost in frost-free conditions. In areas that are frost-free or almost so, leave in situ and protect with a deep dry mulch. See canna cultivation for further information

Propagation

Propagate by division of rhizomes in spring

Suggested planting locations and garden types

Architectural
City and courtyard gardens
Cottage and informal garden
Patio and container plants
Sub-tropical
Bedding
Conservatory and greenhouse
Flower borders and beds

Pruning

No pruning required, deadhead spent flowers to prolong flowering

Pests

May be susceptible to slugs and snails, aphids, glasshouse red spider mite and caterpillars

Diseases

May be susceptible to canna viruses