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Diascia rigescens AGM

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© RHS 2003

Characteristics

Plant type

Herbaceous Perennial

Habit

Mat forming

Resilience

Hardiness

H3 (half hardy - unheated greenhouse/mild winter)

Colour

Flower

Pink in Autumn and Summer

Foliage

Pale Green in Autumn, Spring, Summer and Winter

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

stiff twinspur

Family

Scrophulariaceae


Diascia can be annuals or semi-evergreen perennials, usually making a mat of neat foliage with racemes of cup or bell-shaped flowers, usually in shades of pink, and each with two short spurs

D. rigescens is a spreading semi-evergreen perennial forming a mat of light green, broadly ovate leaves. Two-spurred, salmon-pink flowers are borne in erect spikes on stems to 45cm in height

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, East-facing or West-facing
  • Exposed or Sheltered

Cultivation

Grow in fertile, moist but well-drained soil in full sun. Can be grown in a container; water in dry periods

Soil

  • Moist but well-drained
  • Alkaline, Neutral or Acid
  • Sand, Chalk or Loam

Propagation

Propagate by seed sown as soon as ripe or in early spring or propagate by taking softwood cuttings in summer

Suggested planting locations and garden types

City/Courtyard Gardens, Cottage/Informal Garden, Flower borders and beds, Garden Edging, Patio/Container Plants or Rock Garden


How to care

Pruning

Deadhead to prolong flowering

Pests

Slugs and snails may be a problem

Diseases

Generally disease free