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Penstemon barbatus Twizzle Purple - seeds

Penstemon barbatus Twizzle Purple
Beardtongue, Scarlet Bugler

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This elegant and graceful perennial penstemon develops strong flowering stems 80 cm (32in) tall adorned with delicate deep purple bells. They stand above a tuft of fine, semi-evergreen, greenish-blue foliage. The plant flowers from the first year and its long-lasting summer flowering nourishes bees. It prefers full sun and well-drained fertile soil. Sow from March to May at 18 °C (64.4°F).
Flower size
3 cm
Height at maturity
80 cm
Exposure
Sun
Annual / Perennial
Perennial
Germination time (days)
22 days
Sowing method
Sowing under cover
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Sowing period March to May
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Flowering time July to September
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Description

Penstemon barbatus 'Twizzle Purple' is a variety of bearded penstemon selected for its long and sturdy flowering stems, fast growth and summer flowering in a beautiful purplish pink shade. For three months, its proud stems emerge from the borders, adorned with eye-catching, graceful bells. This penstemon creates a superb composition with grasses, in a border or a wild bouquet. This very hardy, drought-tolerant perennial thrives in fairly fertile, well-drained soils, and loves the sun.

Penstemon barbatus 'Twizzle Purple' is part of a series of recent hybrid penstemons, the 'Twizzle', created by Van Hemert & Co in the Netherlands, awarded by Fleuroselect for their performance. They are perennial plants capable of flowering in the first year, developing taller flowering stems than usual varieties while retaining the natural elegance of the botanical species Penstemon barbatus. The plants have an upright habit and high-quality flowering, from July to September. This series consists of several cultivars with various colours: Twizzle Coral, Twizzle Purple, Twizzle Scarlet, Twizzle White, and Twizzle Blue.

Penstemon barbatus 'Twizzle Purple' is a bushy herbaceous perennial of the Plantaginaceae or Scrophulariaceae family, depending on the classification. It forms a semi-evergreen basal clump of fine, linear, bluish-green foliage in winter, from which thick and sturdy flowering stems emerge in July, reaching 80 cm (32in) high. The tubular bell-shaped, 2.5 cm (1in) long flowers, are distributed towards the top of the stem, over 30 cm (12in). They have a rich and bright hue, somewhere between purplish pink and dark purple. This plant has a deep root system, which can make transplantation difficult but allows it to find some moisture at depth.

Penstemon barbatus 'Twizzle Purple' thrives in sunny, well-drained borders, alongside shrubby salvias, toadflaxes, and grasses such as Stipa tenuifolia or Muhlenbergia capillaris. It is a very cheerful, nectar-rich plant with a wild charm, which will look good with annual poppies, small blue asters, and damask flowers. It is also a very beautiful flower for containers and cut flowers.

 

Flowering

Flower colour purple
Flowering time July to September
Inflorescence Spike
Flower size 3 cm
Bee-friendly Attracts pollinators
Good for cut flowers Cut flower blooms

Foliage

Foliage persistence Semi-evergreen
Foliage colour green

Plant habit

Height at maturity 80 cm
Spread at maturity 40 cm
Growth rate fast

Botanical data

Genus

Penstemon

Species

barbatus

Cultivar

Twizzle Purple

Family

Plantaginaceae (Scrophulariaceae)

Other common names

Beardtongue, Scarlet Bugler

Origin

Cultivar or hybrid

Product reference20456

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Planting and care

Sow 'Twizzle' Penstramon seeds from late winter to mid-spring on the surface of good potting soil, barely covering the seeds with a thin layer of compost or vermiculite. Germination takes 14 to 30 days at 16-18°C (60.8-64.4°F). Keep in the light, in a sealed polythene bag.

When the plants are large enough to handle, transplant them into 8 cm (3in) pots or trays and grow them in cooler conditions. Then gradually acclimatise them to outdoor conditions and plant them outside in late spring or early autumn, 30 cm (12in) apart in full sun and well-drained soil.

The penstemon barbatus is a mountain climate plant, so it tolerates some drought but not extreme heat. Its flowering will be more beautiful in the sun and slightly moist soil, but it must be well-drained. In very clayey, heavy, and poorly drained soil, mix coarse river sand or fine gravel with the planting soil and loosen the soil to a depth of 50 cm (20in).

 

16
€14.50 Each
6
€19.50

Sowing period

Sowing period March to May
Sowing method Sowing under cover
Germination time (days) 22 days

Intended location

Suitable for Meadow, Rockery
Type of use Border, Edge of border, Container, Slope
Hardiness Hardy down to -15°C (USDA zone 7b) Show map
Ease of cultivation Amateur
Exposure Sun
Soil pH Any
Soil moisture Moist soil, well-drained

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