Verbena is an extremely floriferous and attractive group of herbaceous perennials. Many of us could not be without verbena, not least for their propensity to play pied piper to millions of butterflies ...

In general, perennials don't need deadheading, but many can benefit from it. The frequency of deadheading depends on the plant and your gardening goals. Self-cleaning and re-seeding perennials don't ...