Vernonia 'Summer's Surrender'

RHS Plant Profile
ironweed 'Surrender'
Herbaceous Perennial

A dense, clump-forming perennial to 1.2m tall with stout, upright, self-supporting stems densely clothed with narrow, lance-shaped olive-green leaves. Dense clusters of dark purple flowers appear from late summer to autumn

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming, Columnar upright
Genus
Vernonia are annuals, perennials, climbers, sub-shrubs, shrubs and trees, though only the perennials are in cultivation. They have upright stems, simple, stalkless leaves and flat branched heads of tubular purple or reddish pink, occasionally white, flowers
Name Status
Accepted

How to Grow

Cultivation

Grow in any light, moist soil in full sun or partial shade

Propagation

Propagate by seed or division

Suggested planting locations and garden types

  • Cottage and informal garden
  • Prairie planting
  • Flower borders and beds

Pruning

Deadhead regularly to prolong flowering

Pests

May be susceptible to slugs

Diseases

Generally disease-free