Thin twigs or thin branches, lying on the ground, covered with masses of pin-head sized, intense pink pustules; sometimes pustules also on dead shoots, twigs or parts of twigs, which are still attached to the tree.
This microfungus is a most common colonizer of dead twigs of numerous broadleaved trees and shrubs (very common on maples, beech, wild rose and brambles), more rarely of conifers. The fungus propagates intensly, if there is enough breeding material and high humidity. In addition, it is also a weak parasite, causing dieback of broadleaved trees and conifers, if they have been stressed by drought, inappropriate planting, extreme pruning and so on, but it is rarely endangering the life of the hosts. The pink pustules are the spore cushions of the asexual stage Tubercularia vulgaris, which are often mixed with the dark red sexual fruiting bodies.
Curative measures Only preventive measures are recommended: avoidance of any stress; only careful pruning
Coral spot – spore cushions on a dry rose twig
Coral spot – attack of coppices following mutilation of the tree