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Asarina wislizeni Red Dragon - Climbing Snapdragon

Asarina wislizeni Red Dragon
Climbing Snapdragon Vine, Violet Twining Snapdragon

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From summer until the first frost, it produces long and large dark reddish-pink flowers reminiscent of snapdragons. It can even bloom in winter if protected from freezing conditions. The dentate, pale-green foliage forms a beautiful setting for this generous flowering. Tender perennials often grown as annuals, asarinas are climbing or trailing plants that climb any support or gracefully cascade from hanging baskets and pots. Sowing should be done in a warm place, in late winter. 
Flower size
6 cm
Height at maturity
1.20 m
Exposure
Sun, Partial shade
Annual / Perennial
Annual
Germination time (days)
20 days
Sowing method
Sowing under cover with heat
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Sowing period March to April
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Flowering time July to October
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Description

Asarina wislizeni 'Red Dragon' is a beautiful variety with deep purple-red flowers that turn magenta-pink. Its flowers are reminiscent of snapdragons. They appear along the stems from summer until the first frost. They will even bloom into winter if protected from frost. It is a perennial plant with a tuberous root, but not very hardy. It is often grown as an annual or in pots to protect it from cold in a conservatory or unheated greenhouse. Climbing or trailing, this asarina is wonderful in hanging baskets, containers, or for adorning a small structure. It likes warmth and will thrive in moist but well-drained soil, in any exposure.

 

Asarina wislizeni 'Red Dragon' is a hybrid horticultural selection. One of its ancestors, Epixiphium wislizeni or Maurandya wislizeni, is a creeping botanical species with sandy soil origins in the desert areas of the southwestern United States (Texas, Arizona) and northern Mexico. There have been recent changes in the classification of asarinas: among them, asarina, maurandya, lophospermum, and epixiphium are distinguished. All these plants, once classified in the Scrophulariaceae family, have been moved to the Plantaginaceae family. Asarina wislizeni 'Red Dragon' is a plant with a tuberous, pivot-like root and voluble, climbing, or trailing stems. Its above-ground growth persists in frost-free winters, but its root can withstand a few degrees of frost in dry soil (-5°C (23°F) at its lowest point). In this case, the aerial growth is destroyed, but the plant produces numerous stems from its root in spring.

The 'Red Dragon' asarina grows rapidly, with stems that can reach 1.2m (4ft) in a season, or a little more in open ground. The flexible stems crawl on the ground or cling to their support using leaf petioles transformed into tendrils. They are adorned with pale-green to bluish-green heart-shaped leaves with toothed edges. Flowering begins in July and continues until the first frost. If the plant is stored frost-free, it can continue to bloom in winter. The tubular flowers appear in the axils of the leaves, along the stems. They are elongated trumpet-shaped flowers composed of a tube that slightly widens into 5 lobes. Each flower can measure up to 7cm (3in) long. The inside of the corolla is illuminated with a speckled cream throat. The flowers give way to the formation of capsules containing multiple seeds.

Asarinas are ideal plants for unheated conservatories. Outdoors, their rapid growth allows them to climb in one season on bushes or small trees, as well as on wire fences and trellises. Like ipomoeas or sweet peas, they can be hung in baskets or allowed to run in rockeries above walls. The key is to provide them with warmth, non-scorching sun, and soil that doesn't dry out too much. It is also possible to dig up the tubers before frost and overwinter them frost-free with very little watering.

Attention! These seeds are reserved for highly experienced gardeners who are accustomed to sowing very fine seeds. These seeds are as fine as dust, barely visible to the naked eye.

 

Flowering

Flower colour red
Flowering time July to October
Inflorescence Solitary
Flower size 6 cm
Bee-friendly Attracts pollinators

Foliage

Foliage persistence Semi-evergreen
Foliage colour green

Plant habit

Height at maturity 1.20 m
Spread at maturity 30 cm
Growth rate very fast

Botanical data

Genus

Asarina

Species

wislizeni

Cultivar

Red Dragon

Family

Plantaginaceae

Other common names

Climbing Snapdragon Vine, Violet Twining Snapdragon

Botanical synonyms

Maurandya, Lophospermum, Epixiphium)

Origin

Cultivar or hybrid

Product reference19324

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Planting and care

Sow from early February to mid-April in good potting soil, barely covering the seeds with a very thin layer of compost or vermiculite. Germination takes 14 to 21 days at 18-20°C (64.4 to 68°F). Light promotes germination and heat is essential. It can be useful to enclose the sowing in a polyethylene bag.

Once they are sufficiently developed to be handled, transplant the seedlings into 7.5cm (3in) pots and grow them in a cooler environment, repotting if necessary. For outdoor planting, gradually acclimatise the young plants to outdoor conditions and transplant them at the end of spring, after the last frost. Space them 30cm (12in) apart. Choose a sunny, but not scorching, sheltered location and plant in moist, well-drained soil. In very acidic soil, a pinch of lime is useful before planting to alkalise the substrate. To help the plant to climb, provide a support for it to attach to: a trellis, wire, etc. When suspended, the stems will gracefully droop.

Asarinas grow well in a greenhouse or conservatory, in pots with a diameter of 18 to 20cm (7 to 8in). The temperature should not drop below 5 to 7°C (41 to 44.6°F) in winter.

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14,50 € Each

Sowing period

Sowing period March to April
Sowing method Sowing under cover with heat
Germination time (days) 20 days

Intended location

Suitable for Meadow, Woodland edge
Type of use Container, Slope, Climbing, Greenhouse, Conservatory
Ease of cultivation Amateur
Exposure Sun, Partial shade
Soil pH Neutral
Soil moisture Moist soil,

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