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A picture of a Penstemon heterophyllus 'Heavenly Blue'

Penstemon heterophyllus 'Heavenly Blue'

Penstemon heterophyllus 'Heavenly Blue'

Photo by CandideUK (All rights reserved)

Full Sun
Moderate watering
Frost Hardy

9a

USDA zone

-7°C

Minimum temperature

Expected size

Height
Spread

50cm

Max

50cm

10cm

Min

10cm

5 years to reach maturity

Flowering

  • spring
  • summer
  • autumn
  • winter

Penstemon heterophyllus 'Heavenly Blue' Overview

An evergreen perennial with blue-green leafy stems. From early summer it bears racemes of rich blue, bell-shaped flowers with purple tinged throats. Attracts beneficial insects to the garden.

Common problems with Penstemon heterophyllus 'Heavenly Blue'

How to propagate Penstemon heterophyllus 'Heavenly Blue'

Seed

You can propagate by seed in autumn or spring.

Cuttings

Softwood or semi-ripe cuttings of non-flowering shoots in mid-summer. Propagate cultivars by cuttings.

Other uses of Penstemon heterophyllus 'Heavenly Blue'

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