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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Ribes > Leaves fall off prematurely

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Ribes > Leaves > Leaves fall off prematurely

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White Pine Blister Rust
Cronartium ribicola

  • Light yellow angular leaf spots on upper leaf surface
  • Hair like orange spore producing structures on lower leaf surfaces
  • Powdery orange spores may be present
  • In highly susceptible varieties infected leaves may drop
  • More information on White Pine Blister Rust
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Mycosphaerella leaf spot
Mycosphaerella ribis (Septoria ribis)

  • Small, irregular brown spots with gray centers on leaves
  • Leaves turn yellow, brown and then drop prematurely
  • Symptoms often occur on bottom of plant first

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