Diplocarpon rosae

    Description

    Diplocarpon rosae is a fungus that causes the rose disease Black Spot. The black spots are circular with a perforated edge, and reach a diameter of 14mm, but vary in size. Badly affected plants, however, will not show the circular patterning, as they combine to cause a large black mass.

    Identification difficulty
    Habitat

    Wherever roses grow.

    When to see it

    Whenever roses are in leaf.

    Life History

    Lower leaves are infected first. Diseased leaves fall to the ground carrying the disease which will infect the plant again the following year.

    UK Status

    Common and widespread in Britain.

    VC55 Status

    Common in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map