Verbena bonariensis
Garden Plant Information

Verbena bonariensis - flowers

 

Verbena bonariensis - close-up

 

Verbena bonariensis - stalk

 

Name

Verbena bonariensis (also called Argentinian vervain and purple top)

Genus  

Verbena

Species

bonariensis

Cultivar/variety

 

General description

Tall clump forming herbaceous perennial with domed heads of lilac florets. Useful for flower beds and borders, gravel gardens, prairie and wildlife planting. Provides attractive and non-intrusive height in the borders. Good wildlife plant; flowers attract bees and butterflies during the day, whilst scent becomes stronger after dark, attracting night insects like moths.

Season of interest

Lilac flowers from mid summer to late autumn.

Key horticultural features

  1. Tall, open habit. H: up to 2m.

  2. Stems - slender, square, ridged; slightly hairy.

  3. Long, serrated leaves with no petiole (leaf stalk).

  4. Clustered, lightly scented, flat/domed headed flowers in lilac.

Cultural details

Aspect

Sunny. Stands well against wind.

Soil

Well drained, light.

Hardiness

Hardy down to -5c, though will overwinter more successfully in well drained soil.

Maintenance

Cut back old blooms to promote more flowers. Generally stands well in wind, but sometimes plants need support.

Propagation

From seed sown in early spring, with heat. Will self-seed in well drained soil.

 

 

 

 

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Published: 19-09-2005

Updated:   14-01-2006