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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Ageratum > Malformed or distorted flowers

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Ageratum > Flowers > Malformed or distorted flowers

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  • Aster yellows 1\
  • Aster yellows 2
  • Aster yellows 3

Aster Yellows
Phytoplasma

  • Part or all of the leaves may turn yellow
  • Flowers fail to develop, remain small green and may be distorted
  • Clumps of weak shoots known as witches broom develop throughout the plant or on flower stalks
  • More information on aster yellows...

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