Ipomoea purpurea 'Kniola's Black Night'

RHS Plant Profile

morning glory 'Kniola's Black Night'

RHS

Synonyms

Ipomoea purpurea 'Kniola's Purple-black'
Ipomoea tricolor 'Kniola's Black'
Ipomoea purpurea 'Kniola's Black'

Climber Wall Shrub

Buy this from Plant Nurseries
2 Suppliers

A short-lived perennial twining climber to 5m tall, usually grown as an annual. Leaves are heart-shaped or three-lobed. Flowers borne from summer into early autumn are funnel-shaped, 3-6cm in diameter and deep purple with purple-flushed white throats

Position

Full sun

Soil Types

Chalk, Loam, Sand

Max Height

2.5-4 metres

Max Spread

0.5-1 metres

Size

Time to Maturity: 1 year
Max Spread: 0.5-1 metres
Max Height: 2.5-4 metres

Growing Conditions

Chalk Loam Sand

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

Position

Full sun

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): H1C

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Convolvulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Climbing
Potentially harmful: Harmful if eaten. Wear gloves and other protective equipment when handling. Pets: Harmful if eaten. For further information and contact numbers regarding pets, see the HTA guide to potentially harmful plants
Genus: Ipomoea can be annuals or perennials, often twining, or evergreen shrubs, with simple, lobed or dissected leaves and tubular or funnel-shaped flowers which may be solitary or borne in racemes or panicles
Name Status: Unresolved

How to Grow

Cultivation

Grow as an annual climber in a moist but well-drained soil in full sun and sheltered from cold winds

Propagation

Propagate by seed. See sowing seeds indoors for further advice

Suggested planting locations and garden types

Cottage and informal garden
Patio and container plants
Climber and wall shrubs
Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to glasshouse red spider mite

Diseases

Generally disease-free