Issue 2 of the University of Illinois Home, Yard, and Garden Newsletter is now available
Issue no. 2 of the Home, Yard & Garden Newsletter is
now available on the Web. Point your browser to:
IN THIS ISSUE:
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Yellow-Bellied Sapsucker
Yellow-bellied sapsuckers are attacking Illinois trees at
this time. The do so during both spring and fall migrations through the state.
These woodpeckers typically fly south through Illinois from about mid-September
through October, and they fly back north in the spring from early April through
mid-May. They typically peck one-quarter inch diameter holes in vertical or
horizontal rows in the trunk and larger branches.
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European Pine Sawfly
European pine sawfly will have hatched in southern and
central Illinois. They are likely to hatch in northern Illinois in about a
week. The larvae appear similar to green caterpillars with dark green stripes
and large black heads, growing to about one inch long. They are not true
caterpillars; they have more than five pairs of prolegs and develop into wasp-like
adults.
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Impatiens Downy Mildew
Impatiens Downy Mildew (IDM) continues to threaten one of
the most popular shade-tolerant bedding plants in American landscapes. This
disease is caused by a fungal-like pathogen, Plasmopara obducens, and only
infects garden impatiens (Impatiens walleriana). New Guinea Impatiens
(Impatiens 'New Guinea') and related hybrids have a high resistance to the
disease.
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Bright Orange Tree Bark
Last week, after several days of cool temperatures and
rainy weather, I observed several trees with a bright orange color to their
bark. A few homeowners, who also witnessed similar symptoms, phoned the U of I
Plant Clinic with their concerns. From a distance, the trees appeared to have
been used as paintball targets.
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A Good Year for Dandelions!
I've noticed quite a few lawns lately that are more
yellow than green. The cool temperatures
we've experienced this spring and the wetter conditions have certainly been
favorable for the growth of dandelions (Taraxacum officinale). However, this cool-season perennial tolerates
many cultural conditions and soil types and can be found in most lawns.
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Illinois Invasive Species Awareness Month
Did you know that May is Invasive Species Awareness Month
(ISAM)? ISAM provides opportunities for all citizens of Illinois to participate
in invasive species awareness events around the state. Events and programs are
being held across the state and everyone is encouraged to attend and learn more
about invasive species.
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2012 First Detector Wrap Up
The 2012 First Detector Training Workshops are officially
in the books. We received a tremendous amount of interest in this inaugural
workshop series. Many of the workshops were filled to capacity and the
enthusiasm at all seven events was terrific.
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