Iris Borer

Alpine & Rock Garden Society Page

Iris Borer

Description: Eggs overwinter in stems of iris and other

debris. After eggs hatch they must crawl to the base

of the iris to bore into stems. During this migration

they are susceptible to Grub-Away Nematodes. Infested

leaves are yellow from the tip back, have notches on

the edge; plants lose vigor; many fail to bloom.

Solution: Grub-Away Nematodes are the only

effective control; soak bottom portion of stem and soil.

Keep soil moist for first week.


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