Photo showing the fluffy seeds heads of a rosebay willow herb plant, pictured growing next to a countryside hedgerow. This attractive plant (perennial herbaceous) is a wild flower and can be a persistent garden weed at times. It is often referred to as 'fireweed' and the 'great willow herb', while its Latin name is Chamerion angustifolium. It belongs to the Onagraceae family.