Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00000741
11/12/99
HYACINTHUS INSECT PROBLEMS
Bulb mite causes little brown spots on the bulbs which
become powdery masses. The bulb surfaces become brown and
hard. Discard heavily infested bulbs and avoid infested
soil.
White grubs feed on the bulbs and roots.
Stem and bulb nematode causes bent and yellowish leaves
which later turn brown. Blossoming is reduced and bulb
scales become brown and rotted. Bulb cross sections show
a dark ring. Infested parts often become swollen. Avoid
infested soil. No chemical controls are suggested.
Related information.
Pesticide Recommendations
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This file was generated from data base ZZ on 01/19/00.
Data base ZZ was last revised on 11/12/99.
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