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How to Manage Pests

Pests in Gardens and Landscapes

Bulb mites—Rhizoglyphus spp.

Bulb mites infest flower crop bulbs such as daffodil, freesia, gladiolus, lily, and tulip in storage and in the field. Bulb mites are pearly white to brownish with stubby legs.  Adults are about 1/32 inch long, relatively large in comparison with most other pest mite species.

Damage

Bulb mites appear to be secondary pests, attacking weakened tissue.  They thrive in association with bulb and root diseases.  Infested fleshy bulb scales commonly turn reddish brown.  Bulb mite-infested roots, rhizomes, or basal stems can become soft and decayed during storage or in the field.

Solutions

Inspect bulbs carefully before planting for signs of bulb mites, and destroy any that are infested, decayed, or are soft when squeezed. Avoid injuring bulbs during digging, handling or storage. Injuries promote attack by diseases and mites. If storing bulbs, examine them carefully for signs of mites and disease.

 

Bulb mite adult
Bulb mite adult

 


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2008 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See How to manage pests, or in the U.S., contact your local Cooperative Extension office for assistance. /PMG/GARDEN/FLOWERS/INVERT/bulbmite.html revised: January 17, 2008. Contact webmaster.