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the pictures for larger view. |
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Click on
the pictures for larger view. |
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Healthy and damaged iris plants. Leaf fans with
yellow leaves on right indicate damage MAY be present. |
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Pink iris borer caterpillar is exposed when
heavily damaged leaf is split. |
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Close up of damaged leaf fan (cluster of 3 yellow leaves)
next to healthy leaves. Note browning at base of leaf fan. Brown clumps
of caterpillar excrement may also be visible. |
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Rotted rhizome contains an iris borer. Note the brown head
and creamy colored body. |
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Peeled leaf sheath reveals pink iris borer caterpillar and
tissue rot associated with feeding. |
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Iris borer feeding on rhizome before rot settles in. |