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Penstemon diffusus

Cascade penstemon

Garden

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Features

  • BloomsJune to October
  • Growth HabitStalked clump
  • Flower ColourPink-purple
  • Leaf ColourGlossy dark green

Description

Penstemon diffusus (Cascade penstemon). This is a semi-evergreen spreading subshrub with ovate, toothed glossy dark green leaves and panicles of pink-purple bell-shaped flowers.

Characteristics

Perennial, Semi-evergreen, Sub-shrub

Origin

North and Central America.

Interest and use

Rock garden, cutting bed, border, flower arranging Suitable for coastal conditions.

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Needs

  • LightFull sun
  • HardinessHalf hardy (min 0°C)
  • SoilWell drained, Fertile
  • Soil pH5.5 to 7.0
  • WaterSemi-moist

Cultivation

They will thrive in fertile, well-drained soil with full sun. You can propagate by division in the spring or from seed in the spring or autumn.

Propagation

You can propagate by seed in autumn or spring or by softwood or semi-ripe cuttings of non-flowering shoots in mid-summer. Propagate cultivars by cuttings.

Pests, diseases or disorders

May be damaged by slugs and snails and powdery mildew.

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