Penstemon 'Rich Ruby'

beard tongue

Eventual height & spread

Penstemon 'Rich Ruby'

beard tongue

  • RHS Award of Garden Merit
  • 9cm pot
  • £8.99
  • available to order from spring
  • 3 × 9cm pots
  • £24.00 £8.00 each
  • available to order from spring
Delivery options
  • Standard £5.99
  • Position: full sun or partial shade
  • Soil: moderately fertile, moist but well-drained soil
  • Rate of growth: average
  • Flowering period: July to October
  • Hardiness: frost hardy (will need winter protection in cold areas)


A tall cultivar that produces upright, reddish-purple stems, which are brimming with deep crimson, bell-shaped flowers that have a bluish hue and a white-streaked throat.

Colourful and prolific flowers in summer and autumn.



  • Garden care:
    Plant penstemons in well-drained soil in a sunny or lightly shaded position, incorporating compost or well-rotted manure to improve fertility. Water regularly until established, then reduce watering, as they prefer drier conditions once settled.

    Deadhead faded blooms frequently to extend the flowering season. In autumn, leave the top growth in place to provide winter protection, then cut back in spring when new shoots emerge lower down the stems.

    Apply a dry mulch, such as bark or composted straw, around the base in colder regions to insulate the roots from frost. Every few years, lift and divide congested clumps in spring to maintain vigour and encourage fresh growth.