Snail Vine Blue

A perfumed climber.

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Unusual and fragrant. The colouring is a mixture of mauve blue and green that change as the bloom matures. The unusual shape of the flowers is known as a coiled keel, and as the name suggests, they mimic the shape of a snails shell.

If the flowers are pollinated they will be followed by decorative bean shaped, green seed pods that age to brown. The flowers are pollinated by ants, so you need a few of them to be able to enjoy the pods.

Snail Vines have large leaves, which are divided into three separate leaflets, each up to 13cm long. This creates a dense covering of foliage wherever they grow. It is a good idea to cut the tendrils back in summer, when it has reached the desired size, this will help to promote more flowers – the side growth can be a distraction for the plant, just like with your beans or strawberries – so if it is flowers you want, you will need to prune.

Snail Vines look wonderful over a trellis or archway, along pergolas, in shrubs and trees or supported on fences. You could even trail them on a retaining wall. They may take a season to settle in, but after that time they are vigorous and can cover large areas.

In cold climates they will die backing winter, you can add a dry mulch of straw at this time to protect the plant, then, come spring they will soon shoot again. In warm climates they will grow larger and remain evergreen.

Grow in a full sun position. Plant your Snail Vine in humus rich, moist, well drained soil. Water to establish and keep moist in active growth. Add a liquid fertiliser monthly when they are blooming, late spring to autumn. Where the weather is warm they will even flower into winter.

Known botanically as Vigna caracalla, it was named after an Italian botanist from the 17th Century, Domenico Vigna. Caracalla was a Roman Emperor; or we have read, it could alternatively mean from Caracas, in Venezuela. Other common names for the Snail Vine include Corkscrew Vine or Flower and Snail Bean.

Code

PHSBL

Botantical name

Vigna caracalla

Height

4-8m

Width

30-100cm

Flowers

Summer to Winter

Climate

Cool to Tropical

Availability

Australia wide

Frost hardiness

Aspect

Full Sun

Supplied as

Pots

Water needs

1