Awarded an rhs agm dianthus 39joy39 produces lots of pastel pink semi45double flowers over a long period throughout summer forming compact clumps of slender grey45green leaves this hardy evergreen perennial is an easy low maintenance addition to the garden pinks are cottage garden classics and are the perfect addition to herbaceous borders patio containers coastal gardens or sunny banks where they tolerate drought well dianthus also make marvellous very long45lasting cu