Issue no. 3 of the University of Illinois Home, Yard & Garden Newsletter
Issue no. 3 of the Home, Yard & Garden Newsletter is
now available on the Web. Point your browser to:
IN THIS ISSUE:
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Bridalwreath Spirea and Insect Management
Bridal wreath spirea, or Vanhoutte spirea (Spiraea x
vanhouttei), is blooming in southern Illinois. It will probably start blooming
in central Illinois in a week or so, and in northern Illinois around the end of
this month. This is a major phenology plant in Don Orton's book Coincide.
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Gypsy Moth
Be on the lookout for young Gypsy moth caterpillars in
northern Illinois. Gypsy moth overwinters in the egg stage, hatching out at
saucer magnolia, Magnolia x soulangiana, petal drop
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Buying Healthy Plants
It is that time of the year when you head to your local
garden shop to purchase plants for your landscape or garden. We would like to
take this opportunity to stress how important it is for you to purchase healthy
plants to help avoid plant problem frustration as the season progresses.
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Rhododendron Winter Burn
This spring, some Rhododendrons are showing symptoms of a
form of winter injury known as winter burn (see photo). Symptoms may vary, but winter burn usually
results in areas of the affected leaves turning brown.
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Modified Growing Degree Days (Base 50° F, March 1
through May 9)
Insect development is temperature dependent. We can use
degree days to help predict insect emergence and activity. In warm years,
insects emerge earlier, like we experienced last spring. Degree day
accumulations are slightly behind the 11-year average.
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Brown Marmorated Stink Bugs Starting To Make Their Spring
Appearance
Another sure sign of spring and warm weather? Reports of
brown marmorated stink bugs (BMSB)! In the past week a couple reports from
around the state have filtered into my email, indicating that brown marmorated
stink bug adults are starting to be found in and near homes.
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Lesser Celandine Becoming a Major Problem in Parts of the
State
If you live in northeast Illinois and you frequent wooded
areas in the spring, you may very likely be familiar with lesser celandine
(Ficaria verna or Ranunculus ficaria) which is also known as fig buttercup and
pilewort.
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