Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00000116
11/12/99
ANEMONE DISEASE PROBLEMS
Leaf spots may cause various spots on the leaves.
Rhizome rot causes rhizome decay then plant death. Dig up
and destroy diseased plant. The causal organism is
Pellicularia rolfsii.
Collar rot caused by Botrytis cinerea causes crown
rotting. Destroy infected plants.
Spot disease causes spot discoloration, distortion,
dropping, and dwarfing of flowers. The leaves and stems
have red spots on them. Remove infected leaves and
flowers. Severely infected plants are removed. The
disease is also called leaf gall and is caused by
Synchytrium anemones.
Downy mildew, caused by Plasmopara pygmaea, forms a
fine white mildew on the lower leaf surface. The plants
are discolored and distorted and the stems aborted.
Destroy badly infected plants.
Rust causes thickening and paling of the leaves and
crown. Brown pustules form on the undersides of leaves.
Badly infected plants are destroyed.
Smut symptoms are dark brown powdery pustules on swollen
regions of the leaf stalks and blades. Destroy diseased
leaves. The causal fungus is Urocystus anemones.
Related information.
Pesticide Recommendations
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This file was generated from data base ZZ on 01/19/00.
Data base ZZ was last revised on 11/12/99.
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