Issue no. 5 of the Home, Yard & Garden Newsletter is now available
IN THIS ISSUE:
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"Pest Management for the Home Landscape" is now
available for purchase at $24.95 plus shipping. It can be ordered online at
pubsplus.illinois.edu, or by calling 1-800-345-6087.
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Hatching bagworms were found in the Champaign-Urbana area
of central Illinois on May 14. Hatching typically occurs in the first half of
June, so they are two to four weeks early. The phenology indicator is catalpa
full bloom, which was occurring early this week. We recommend that treatment be
delayed for two weeks after hatching to allow ballooning to finish. Hatch would
have occurred in southern Illinois about two weeks ago, so it is time to treat
in that portion of the state.
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We are still seeing the effects of the late frost on
plant samples at the plant clinic. In roses, frost can destroy fresh growth and
cause stems and leaves to wilt, turn black and fall away from the plant.
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Newly emerged yellow nutsedge (Cyperus esculentus) has
been spotted around central Illinois recently. Also known as yellow nutgrass,
yellow nutsedge is a warm-season perennial member of the Cyperaceae (sedge)
family that reproduces by seeds and from tubers (nutlets). Though the sedge
family contains 98 to 146 genera and over 5,300 species, the most common weedy
sedge found in lawns and landscapes across the state is yellow nutsedge.
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This weekend, while working in my yard, I noticed my
Little Honey wasn't looking too good. Of course, I am referring to my Little
Honey Oakleaf Hydrangea. The normal gold to chartreuse leaves had developed
numerous dark reddish-purple angular spots. Hydrangeas are known to be hosts to
several leaf spots, both fungal and bacterial.
Oakleaf Hydrangeas, in particular, are known to develop leaf spots
caused by the bacterial pathogen Xanthomonas campestris.
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