pink eupatorium flowers in the foreground, photographed in mid summer at rhs wisley garden in surrey uk. glasshouse behind.

bee friendly blooming bright building closeup colorful environment eupatorium flora floral flowers garden gardening glass house glasshouse greenhouse insectfriendly landscape outdoors perennial perennials pink flower pinkpurple plant pollinator plants pretty purple rhs wisley royal horticultural society salvia stems stunning summer surrey