This British wildflower will brighten your garden borders with its glowing pink-purple blooms from June to September and is very attractive to butterflies. Knapweed makes a lovely low-maintenance perennial and is happy even in poor soils. It’s hardy throughout the UK and also drought tolerant once established. A fabulous addition to informal borders, cottage gardens and wildlife gardens.The Kew Pollinators range of seeds from Thompson and Morgan has been specially created alongside the experts at Royal Botanic Gardens, Kew to attract and support a wide range of pollinators, including bees, butterflies and beetles, as well as a number of other important pollinating insects. Helping these pollinators to thrive is hugely important for our eco-system as a whole and these seeds, in their striking packaging inspired by artwork from the Kew archives, will help to create the environment which they need to thrive, with varieties chosen to help a wide range of pollinating insects, including some night flowering plants to help moths which also play an important part in our gardens.Product specifications:Position: Full SunHeight: Up to 75cm when fully establishedSpread: Up to 50cm when fully establishedSupplied as 1x Centaurea nigra Kew Pollination Collection seed packet (approx. 300 seeds)Delivered with growing and care instructionsFlowering period – June to SeptemberImages shown are for guidance only of the expected results from plants upon maturity. Different growing conditions might vary results. Image may be included for illustration of supply but can vary due to seasonality changes (e.g. deciduous plants lose leaves in colder months).