Duo of penstemons with purple foliage
Duo of penstemons with purple foliage
Penstemon digitalis Dark Towers, Husker Red
Foxglove Beardtongue, Smooth White Beardtongue, Talus Slope Penstemon
Very pleased with these plants. They established straight away. It’s a very hardy variety and I can’t wait to see them flower.
Cécile, 06/06/2024
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Description
This duo of Penstemon digitalis with purple foliage combines the 'Dark Tower' and 'Husker Red' varieties, undoubtedly the most rewarding for the gardener. These very hardy gentlemen combine dark foliage with a delicate yet generous flowering. Between June and July, they produce dark-coloured floral stems that bear bell-shaped flowers in a delightful range of pink hues. You can plant them in a sunny spot in a romantic, English-style flowerbed or a large flower border.
This duo consists of:
- 1x Penstemon digitalis 'Husker Red': a variety that reaches 60 to 70 cm in height, with leaves coloured brownish-purple that turn slightly green in summer. The floral stems are also brownish-purple, with tubular flowers in a pinkish-white colour.
- 1x Penstemon digitalis 'Dark Towers': a taller variety, reaching 80 cm in height when in bloom. Its foliage is darker than 'Husker Red' and remains more colourful in summer. The floral stems are burgundy and adorned with pale pink flowers with a dark pink base.
Plant this duo of penstemons in a sunny spot in the garden, either in a flowerbed or a large flower border. These perennials tolerate cold winters very well if planted in light, well-drained soil that does not retain too much water in winter. A mixture of compost, garden soil, and coarse sand will suit them. A slightly raised flowerbed is ideal. Leave a spacing of 40 cm between each plant (5 plants per m²). The penstemons in this duo require reasonably rich soil and a little water in summer to flower abundantly.
There are plenty of ideas for creating a large flowerbed, according to each gardener's taste. You can mix these penstemons with tall blue bellflowers, 'Flamingo' Gypsophila (pink), Lychnis 'Angel's Blush', and greater sea kale (Crambe cordifolia) in a large, English-style flowerbed that blooms for months. They also make excellent companions for pink or white roses. Once well-established, this solid and hardy duo only requires pruning the stems to 10 cm above the ground in March-April.
Flowering
Foliage
Plant habit
Botanical data
Penstemon
digitalis
Dark Towers, Husker Red
Scrophulariaceae
Foxglove Beardtongue, Smooth White Beardtongue, Talus Slope Penstemon
Cultivar or hybrid
Planting and care
Plant these plants in sunny, well-prepared, light, rich, well-draining soil in early spring or early autumn.
Penstemon digitalis thrives in light, rich, well-drained soil that is not too wet in winter but does not dry out too much in summer. It tolerates a little limestone, and slightly acidic soil is also suitable. These plants are easy to grow and only require a little care due to their relative intolerance of winter humidity. They are truly hardy, tolerating temperatures down to around -30°C. Do not prune the clump at the end of the season, as its semi-evergreen foliage regulates soil moisture. It is possible to mulch the base at the start of winter with a dry bed of dead leaves, crushed sand, and gravel to improve drainage and prevent crown rot caused by excess moisture. Light fertilisation at planting is beneficial, but it should be avoided afterwards, as this could result in Penstemon having overly spindly, loose stems. Although fairly disease-resistant, Penstemon can be prone to powdery mildew and attacked by snails, slugs and chrysanthemum nematodes.
Planting period
Intended location
Care
Planting & care advice
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Hardiness is the lowest winter temperature a plant can endure without suffering serious damage or even dying. However, hardiness is affected by location (a sheltered area, such as a patio), protection (winter cover) and soil type (hardiness is improved by well-drained soil).
In temperate climates, pruning of spring-flowering shrubs (forsythia, spireas, etc.) should be done just after flowering.
Pruning of summer-flowering shrubs (Indian Lilac, Perovskia, etc.) can be done in winter or spring.
In cold regions as well as with frost-sensitive plants, avoid pruning too early when severe frosts may still occur.
The harvesting period indicated on our website applies to countries and regions in USDA zone 8 (France, England, Ireland, the Netherlands).
In colder areas (Scandinavia, Poland, Austria...) fruit and vegetable harvests are likely to be delayed by 3-4 weeks.
In warmer areas (Italy, Spain, Greece, etc.), harvesting will probably take place earlier, depending on weather conditions.
The sowing periods indicated on our website apply to countries and regions within USDA Zone 8 (France, UK, Ireland, Netherlands).
In colder areas (Scandinavia, Poland, Austria...), delay any outdoor sowing by 3-4 weeks, or sow under glass.
In warmer climes (Italy, Spain, Greece, etc.), bring outdoor sowing forward by a few weeks.
The planting period indicated on our website applies to regions in USDA Zone 9a (East Coast and Midlands: Dublin, Wexford, Waterford, Kilkenny, Portlaoise). It will vary depending on where you live:
- On the west coast and in the north-west (Galway, Limerick, Sligo, Donegal, Westport), delay planting by 1 to 2 weeks in spring and bring it forward by 1 to 2 weeks in autumn compared to the dates given, preferably choosing periods without strong winds.
- In the inland hills and plateaus (Wicklow Mountains, Macgillycuddy’s Reeks, Connemara, Killarney), it is best to plant in spring (April–May) or autumn (September–October), avoiding periods of waterlogged soil in winter and strong winds, which pose the main risk to newly planted trees in these areas.
The flowering period indicated on our website applies to regions in USDA Zone 9a, such as the East Coast and Midlands, including Dublin, Wexford, Waterford, Kilkenny and Portlaoise.
This will vary depending on where you live:
- On the west coast and in the northwest (Galway, Limerick, Sligo, Donegal and Westport), it will be delayed by one to two weeks compared to the given dates, due to stronger Atlantic winds and less spring sunshine.
- In the inland hills and plateaus (the Wicklow Mountains, the Macgillycuddy's Reeks, Connemara and Killarney), flowering will be delayed by two to three weeks. Flowering mainly occurs between May and July, with the limiting factors being less frost and more of the excessive humidity, strong winds and lack of sunshine that are characteristic of these areas.
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