Penstemon glaber - Beardtongue
Penstemon glaber - Beardtongue
Penstemon glaber - Beardtongue
Penstemon glaber
Dwarf Blue Penstemon, Showy Penstemon
Has she died ????
Jp, 03/06/2022
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This plant carries a 12 months recovery warranty
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We guarantee the quality of our plants for a full growing cycle, and will replace at our expense any plant that fails to recover under normal climatic and planting conditions.
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Description
The Penstemon glaber combines qualities. It is a hardy and reliable perennial species, not very demanding regarding soil. It offers a generous and charming flowering, ranging from pink to more or less light mauve depending on the temperature, as well as striking foliage at the end of the season. The plant, not very tall and very bushy, dressed in elongated foliage, produces a multitude of bell-shaped flowers of a beautiful size gathered in spikes. Full of charm in summer beds or planted in a pot on the terrace, it is a lovely, not-too-dry rockery plant and a delightful cut flower.
The Penstemon glaber is native to the American West, where it is found in rocky and schistose prairies, as well as in pine forests. Depending on the classifications, it is a bushy perennial plant, woody at the base, belonging to the family of scrophulariaceae or Plantaginaceae. Its above-ground vegetation persists more or less depending on the winter cold. The Penstemon glaber forms clumps of 40 cm (16in) in all directions, with upright stems covered with abundant foliage finely lanceolate of medium green. From September to November, all the vegetation gradually turns to intense red-pink. Its growth is relatively rapid. The flowering extends from June to August, developing on the terminal part of the leafy stems. The flowers, shaped like bell-shaped bells, measuring 3 to 4 cm (1 to 2in) long, are gathered in clusters. They have a lovely colour where pink dominates at the beginning of flowering, and mauve and white take over in July and August. The plant will adapt to any good garden soil properly drained and not too dry in summer, even if it is limestone.
The Penstemon glaber is used in beds or borders among perennials such as agapanthus, catmints, asters, geraniums, and perennial chrysanthemums or mixed with shrubs such as repeat-flowering roses or Caryopteris, for example. It goes well with light annuals such as love-in-a-mist and cosmos. Its pastel flowers are enhanced by dark foliage such as Weigela Minor Black or Physocarpus Summer Wine. It also performs well in pots, with proper drainage and regular water and fertilizer inputs. Penstemons also make perfect cut flowers.
Flowering
Foliage
Plant habit
Botanical data
Penstemon
glaber
Scrophulariaceae (Plantaginaceae)
Dwarf Blue Penstemon, Showy Penstemon
Cultivar or hybrid
Planting and care
Penstemon glaber is a tough plant that can survive temperatures as low as -15 °C (5°F) if the soil is well-drained. It won't thrive in heavy, wet soils during winter, but it does well in good, well-worked, and well-drained garden soil that's slightly chalky or acidic. It usually grows on rocky soils, but not too dry in summer.
To grow hybrid penstemons successfully, you need to focus on the soil. These plants typically come from mountainous areas and prefer rich, light, occasionally dry but well-drained soils, especially in winter. They do not do well in hot summers and arid conditions and can rot quickly in excessively wet soils. Choose a warm, sunny spot that's elevated and sheltered from cold winds (south or west exposure) in cool climates. In hot climates, pick a cooler, semi-shaded spot. In very cold regions, take stem cuttings in autumn.
Penstemons don't suffer from specific diseases. You only need minimal maintenance, but when you remove faded flowers in autumn, slightly shorten the deflowered stems without cutting them back to the ground, especially in regions where winter is wet. The foliage plays an important role in moisture regulation. As with shrubby salvias, wait for spring to be well established (March-April) before shortening branches whose foliage has been damaged by the cold. If summer is dry, water regularly to support flowering. Cover the base with a glass or a cold frame in cold regions to protect it from severe cold. Divide your penstemons every three or four years to rejuvenate them, but wait for spring.
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).
The flowering period indicated on our website applies to countries and regions located in USDA zone 8 (France, the United Kingdom, Ireland, the Netherlands, etc.)
It will vary according to where you live:- In zones 9 to 10 (Italy, Spain, Greece, etc.), flowering will occur about 2 to 4 weeks earlier.
- In zones 6 to 7 (Germany, Poland, Slovenia, and lower mountainous regions), flowering will be delayed by 2 to 3 weeks.
- In zone 5 (Central Europe, Scandinavia), blooming will be delayed by 3 to 5 weeks.
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 planting period indicated on our website applies to countries and regions located in USDA zone 8 (France, United Kingdom, Ireland, Netherlands).
It will vary according to where you live:
- In Mediterranean zones (Marseille, Madrid, Milan, etc.), autumn and winter are the best planting periods.
- In continental zones (Strasbourg, Munich, Vienna, etc.), delay planting by 2 to 3 weeks in spring and bring it forward by 2 to 4 weeks in autumn.
- In mountainous regions (the Alps, Pyrenees, Carpathians, etc.), it is best to plant in late spring (May-June) or late summer (August-September).
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.