Asarina
Creeping Snapdragon

SCROPHULARIACEAE
Herbaceous Perennials

A genus of evergreen / semi-evergreen climbing and trailing perennials, being herbaceous in cold winter areas. Asarina are grown for their firework display of snapdragon-like flowers, which are often produced from spring and through to the first frosts.

 

Varieties: -

Asarina. antirrhiniflora
Mixed
                        


© Thompson & Morgan

 

Form: Half-hardy, twining, climbing, of trailing, annual
Height: 6ft (2m) [Stems can trail 8ft (2.5m)]
Spread: 
Foliage: 
Flowers: Dainty snapdragon-like flowers in shades of red, pink, violet and blue, with speckled creamy lips, are borne from spring and until the first frosts

Useful for pots or hanging baskets, flowering from early summer to late winter if protected from frost. 

Sowing Instructions: Sow from early February to mid April in a good seed compost just covering the seed with a very thin layer of compost or vermiculite. Germination takes 14-21 days at 65-70oF (18-20oC). Don't exclude light, sealing in a polythene bag after sowing is helpful.

When large enough to handle, transplant the seedlings into 3in (7.5cm) pots, and grow on in cooler conditions, potting on as necessary. For outdoor planting, gradually acclimatise to outdoor conditions and plant out in late spring after all risk of frost has passed 12in (30cm) apart in a sun or shade in a, sheltered spot and ordinary, cool moist yet well drained soil. On acid soils, a dusting of lime is helpful before planting. Provide a trellis, strings etc., for them to climb. They can be grown in a greenhouse/conservatory and will need a final pot size of 7-8in (18-20cm) and a minimum winter temperature of 41-45oF (5-7oC).

 


Asarina. barclayana See: Maurandya. barclayana


Asarina. barclayana
'Angels Trumpet'


© Thompson & Morgan

 

Form: Half-hardy, twining/self supporting perennial climber
US Zones: 1 2 3 4 5 6 7 8 9 10
Height: 5-7ft (1.5-2.1m)
Spread: 
Foliage: 
Flowers: From mid-Summer until first frosts producing 2in long rosy pink Snapdragon like flowers
Special Features: Flowers in First Year
Ideal For: Hanging Baskets, Bedding, Containers, Cottage Gardens, Patios, Tubs

Sowing Instructions: Sow on the surface of the compost from late winter to early spring in John Innes Seed Compost. Make sure that the compost is moist but not wet and seal in a polythene bag until after germination which usually takes 14-21 days at 65-70oF (18-21oC). Do not exclude light which is beneficial to germination.

Transplant when large enough to handle into 3in (8cm) pots. Pot on as necessary or gradually acclimatise to outdoor conditions and plant out when all risk of frost has passed.

 


Asarina. erubescens

See: Lophospermum. erubescens

 


Asarina. procumbens

Syn: Antirrhinum. asarina
Form: A short-lived, semi-evergreen, trailing perennial
Height: 0.5-1in (1-2.5cm)
Spread: 9-12in (23-30cm)
Foliage: Soft, hairy, grey-green leaves 
Flowers: Throughout the summer, producing, pale cream snapdragon-like flowers with yellow palates 
Hardy: To 14oF (-10oC)
Dislikes: Resents winter wet

 


Asarina. purpusii
'Victoria Falls'


© Thompson & Morgan

Form: Half-hardy, non-climbing, perennial trailer
US Zones: 9 10
Height: 8in (20cm)
Spread: 
Foliage: 
Flowers: From early May until late autumn producing vibrant cerise-purple antirrhinum-like flowers, clasped in lime-green bracts, cascading from delicately arching stems, that grow to 18in (45cm)
Ideal For: Hanging Baskets, Window Boxes, Patios, and Tubs

Sowing Instructions: Sow from early February to mid April in a good seed compost just covering the seed with a thin layer of compost or vermiculite. Germination takes 14-21 days at 70-75oF (20-24oC). Seal in a polythene bag after sowing and don't exclude light.

When large enough to handle, transplant the seedlings into 3in (7.5cm) pots, and grow on in cooler conditions. When well rooted, plant into baskets or container, using a good soil-less compost with some vermiculite added. Leave in a shaded greenhouse for 2 weeks and then gradually acclimatise to outdoor conditions for 10-15 days before moving outdoors, after all risk of frost has passed, to a sunny, sheltered spot.

Water well and feed once a week through the summer. To over-winter, bring indoors to a cool, frost free place in autumn and keep just moist. For a windowsill pot plant, grow on in a 5in (13cm) pot

 


Asarina. scandens
'Brides White'


© Thompson & Morgan

Form: Half-hardy, self-supporting, twining, perennial climber
US Zones: 1 2 3 4 5 6 7 8 9 10
Height: 8ft (2.4m)
Spread: 
Foliage: Fresh green foliage
Flowers: Sophisticated climber with masses of 1¼in (3cm) pure white flowers. Quick to bloom in summer from an early sowing.
Ideal For: Borders, Conservatories, Greenhouses

Sowing Instructions: Sow from late winter to early spring in a good seed compost, 1/16in (1.5mm) deep and gently firm down. Keep soil damp but not wet. Sealing in a polythene bag after sowing is helpful. Do not exclude light which aids germination. Germination usually takes 14-21 days at 65-70oF (19-21oC).

When seedlings are large enough to handle, transplant into 3in (7.5cm) pots and grow on in cooler conditions potting on as necessary. For outdoor planting gradually acclimatise to outdoor conditions for 10-15 days before planting out, after all risk of frost, in a sunny sheltered spot on rich well drained soil.

 

Asarina. scandens
'Jewel Mixed'


© Thompson & Morgan

Form: Half-hardy Perennial Climber
Height: 8ft (2.4m)
Spread: 
Foliage: 
Flowers: From late Spring and until Christmas, producing masses of 1½in (3.8cm) indigo to violet blue, pink or pure white flowers

Sowing Instructions: Sow from early February to mid April in a good seed compost just covering the seed with a thin layer of compost or vermiculite. Germination takes 14-21 days at 70-75oF (20-24oC). Seal in a polythene bag after sowing and don't exclude light.

When large enough to handle, transplant the seedlings into 3in (7.5cm) pots, and grow on in cooler conditions. When well rooted, plant into baskets or container, using a good soil-less compost with some vermiculite added. Leave in a shaded greenhouse for 2 weeks and then gradually acclimatise to outdoor conditions for 10-15 days before moving outdoors, after all risk of frost has passed, to a sunny, sheltered spot.

Water well and feed once a week through the summer. To over-winter, bring indoors to a cool, frost free place in autumn and keep just moist. For a windowsill pot plant, grow on in a 5in (13cm) pot.

 


Asarina. x hybrida
'Red Dragon'


© Thompson & Morgan

Form: Half-hardy, annual climber, multi-branching from the base
Height: 
Spread: 
Foliage: 
Flowers: From Summer, carrying amazing giant flowers, up to 3in (7.5cm) long in carmine-red, which when open reveal creamy-white anthers.
Ideal For: Hanging Baskets, Conservatories, Containers, Greenhouses

Sowing Instructions: Sow from early February to mid April in a good seed compost just covering the seed with a thin layer of compost or vermiculite. Germination takes 14-21 days at 70-75oF (20-24oC). Seal in a polythene bag after sowing and don't exclude light.

When large enough to handle, transplant the seedlings into 3in (7.5cm) pots, and grow on in cooler conditions. When well rooted, plant into baskets or container, using a good soil-less compost with some vermiculite added. Leave in a shaded greenhouse for 2 weeks and then gradually acclimatise to outdoor conditions for 10-15 days before moving outdoors, after all risk of frost has passed, to a sunny, sheltered spot.

Water well and feed once a week through the summer. To over-winter, bring indoors to a cool, frost free place in autumn and keep just moist. For a windowsill pot plant, grow on in a 5in (13cm) pot.

 


 

 

 

 

 

 

Cultivation: -

Grow in moisture retentive, but well-drained soil, to which a great deal of well rotted organic material has been added. Plant in full sun ~ partial shade for best results.

Propagation: -

By seed sown in early spring

Fully Hardy to Frost Tender

In colder climates many of the genus become fully herbaceous, min 41oF (5oC)

Pests & Diseases: -

 

 

 

This page was last updated on 16/02/2004

 

Shiraz Web Publications UK - Online Gardening Advice Collections