<br><font size=3 face="sans-serif">Hi Angie and APWGers:</font>
<br>
<br><font size=3 face="sans-serif">I can't answer your question directly,
but hope that another question directed to the group may help to do so.
</font>
<br>
<br><font size=3 face="sans-serif">I recall several years ago that there
were efforts to map the spread of invasives - the particular project I
recall was happening in the Pacific Northwest. I believe it was similar
to some of the phenology work that is happening now for native species.</font>
<br>
<br><font size=3 face="sans-serif">I see there are a lot of resources the
appear to be at the state or regional level when I search on "invasives
mapping" and could probably spend days looking thru it all to see
if one of them tracks stiltgrass. </font>
<br>
<br><font size=3 face="sans-serif">But, I'm wondering if someone on this
list could instead point us toward a resource that they know to be tracking
stiltgrass or that at least is a more central resource for trying to figure
out who might be tracking stiltgrass. </font>
<br>
<br><font size=2 face="sans-serif">Patricia S. De Angelis, Ph.D.<br>
Botanist, Division of Scientific Authority-US Fish & Wildlife Service-International
Affairs<br>
Chair, Medicinal Plant Working Group-Plant Conservation Alliance<br>
4401 N. Fairfax Dr., Suite 110<br>
Arlington, VA 22203<br>
703-358-1708 x1753<br>
FAX: 703-358-2276<br>
<br>
Promoting sustainable use and conservation of our native medicinal plants.
<br>
<www.nps.gov/plants/medicinal><br>
<br>
Follow International Affairs<br>
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<br>
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<td width=40%><font size=1 face="sans-serif"><b>Angie Shelton <anshelto@indiana.edu></b>
</font>
<br><font size=1 face="sans-serif">Sent by: apwg-bounces@lists.plantconservation.org</font>
<p><font size=1 face="sans-serif">08/16/2012 12:35 PM</font>
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<td>
<div align=right><font size=1 face="sans-serif">To</font></div>
<td><font size=1 face="sans-serif">apwg@lists.plantconservation.org</font>
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<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td>
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<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td><font size=1 face="sans-serif">[APWG] early-flowering stiltgrass</font></table>
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<br>
<br>
<br><font size=3>Hello all, </font>
<br>
<br><font size=3>I have noticed that Japanese stilt grass in south central
Indiana started setting seed by the first week of August this
year. Seed set in this area usually begins in late August to early
September. This year's seed set is almost a full month earlier than usual.
Control efforts on this annual plant need to be done before seed
set to be effective, so an earlier flowering time reduces the time for
late-season management. </font>
<br>
<br><font size=3>The earlier flowering could be a result of a warm, early
spring that caused stiltgrass and most native spring plants to germinate
3-4 weeks earlier than usual. It could also be due to a much warmer
than usual summer. These causes are not mutually exclusive. </font>
<br>
<br><font size=3>I am curious if Japanese stiltgrass is also flowering
earlier than usual in other regions. If so, was germination also
earlier than usual? Summer temperatures were probably warmer than
usual across the entire range in the eastern U.S. What are the typical
germination and flowering times in more southern regions where the growing
season is longer? Being able to predict flowering time across a range
of conditions is important to know when the deadline is to complete management
efforts for the year. </font>
<br>
<br>
<br><font size=3>Angie Shelton<br>
Department of Biology<br>
IU Research & Teaching Preserve<br>
Indiana University<br>
Bloomington, IN 47405<br>
812-855-1674</font><font size=3 color=blue><u><br>
</u></font><a href=mailto:anshelto@indiana.edu><font size=3 color=blue><u>anshelto@indiana.edu</u></font></a><tt><font size=2><br>
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