Verbena bonariensis has tall, narrow, sparsely-leafed stems on top of which flattened heads of bright lavender-purple flowers appear in late-summer. It's perfect for bringing height to an ornamental border and also works well in prairie-style planting schemes with ornamental grasses. It's a superb butterfly plant, rivalling even buddleja.
Bobbles of small purple flower clusters are elevated by long, sturdy but slender stalks up to 2m—it's this eye-level interest which contributes to an impressive and professional looking border. You can enjoy the height of this plant, but without having to sacrifice space because it's extremely narrow! RHS Award-winning Verbena bonariensis is a bee and butterfly magnet, drought tolerant and will bring pops of purple to your garden for most of summer. What's more, this purpletop vervain combines well with virtually anything, from dahlias to ornamental grasses.
aka Argentinian vervain, South American vervain, tall verbena, clustertop vervain, pretty verbena or just purple top.