Diplocarpon rosae


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

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.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map