Verbena bonariensis 1l

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Clusters of purple flowers on tall elegant stems throughout summer that are a magnet for butterflies.

Verbena bonariensis has become a very popular plant amongst savvy gardeners who appreciate its long flowering season and light and airy looks. Planted in a sunny position and well drained soil it will happily waft its tall, wiry stems of flowers in the slightest of breezes from May until well into the autumn. Its upright yet open shape makes this plant ideal to squeeze into even the smallest garden where height is needed or to add a dramatic look to a gravel garden when planted en-masse. Many butterflies, bees and other pollinating insects are drawn to the clusters of flowers for their nectar rich centres and the buzz around the flowers only adds to their charm. The tall stems are almost leafless and filter the wind so that they keep their upright form in all but the strongest of gales, making them valuable plants for exposed and seaside gardens. Able to self seed freely in the right conditions it is a useful plant to naturalise through a  scheme with its see through stems making it at home at the front middle or back of a border. As if all of these good points are not enough this versatile plant also makes a long lasting cut flower.

Tall slender stems add dreamy height and movement for months on end.

Key Features

Plant Type: Herbaceous

Hardiness: H4 - Hardy. Minimum temperature -10 to -5.

Plant Height & Spread (at maturity): H 1.5m x W 30cm (Mature age: 1 Year)

Foliage Colour: Green

Flower Colour: Purple

Fragrant Flower: Yes

Aromatic Foliage: No

RHS Award of Garden Merit: Yes

RHS Perfect for Pollinators: Yes

Foliage Type: Semi-Evergreen

Soil Type: Acid, Alkaline, Chalky, Loam, Sandy

Soil Drainage: Well Drained

Light Exposure: Full Sun

Planting Style: Cottage Garden, Informal Garden, Flower Beds & Borders,  Coastal Garden, Gravel and Drought Resistant Gardens, Wildlife Garden, Rock Garden, Low Maintenance Garden

Season of Interest: Summer, Autumn

Flowering (from - to): May - October

Plant Care & Advice

Verbena bonariensis grows best in an open position in full sun and well drained soil. When planting, dig a hole that's at least twice the size of the existing container and add some general fertiliser to the soil that's to be used to infill around the roots. Unless your soil is very well drained, grit should be added to the base of the planting hole and mixed with the infill soil.

Water your plant well before and after planting. Each spring a handful of general fertiliser can be sprinkled around the base of the plants, taking care not to cover the leaves and stems..

Once your plant has finished flowering, cut the old stems back by half and then to a pair of new shoots in late spring. Verbena bonariensis is relatively short lived but will usually seed around in your garden. The strongest looking seedlings are easily transplanted in late spring or can be left where they are for a natural look.