[APWG] early-flowering stiltgrass

[Marc Imlay]

We found a similar trend with garlic Mustard. Some flowered and seeded much
earlier while some was at a normal time. Thus control season is more spread
out than normal.
 
Marc Imlay, PhD,
Conservation biologist, Park Ranger Office

(301) 442-5657 cell

 <blocked::mailto:Marc.Imlay at pgparks.com>
<blocked::mailto:Marc.Imlay at pgparks.com>   <blocked::mailto:ialm at erols.com>
ialm at erols.com

Natural and Historical Resources Division

The Maryland-National Capital Park and Planning Commission

 <http://www.pgparks.com/> www.pgparks.com



  _____  

From: apwg-bounces at lists.plantconservation.org
[mailto:apwg-bounces at lists.plantconservation.org] On Behalf Of
Cynthia_Boettner at fws.gov
Sent: Thursday, August 16, 2012 1:23 PM
To: Angie Shelton
Cc: apwg at lists.plantconservation.org;
apwg-bounces at lists.plantconservation.org; telliman at newfs.org;
chris at polatineco.com; dgumbart at tnc.org
Subject: Re: [APWG] early-flowering stiltgrass



Hi Angie,
Although here in western Massachasetts we are half expecting an earlier seed
set this year, so far it seems to be on a similar schedule as last year.
Like you, in the past we haven't seen flowering until late August. We still
hadn't seen flowering here as of Aug. 11, the last time we were out doing
control work in Conway, MA. Now that I've seen your email, I will expect
that our events scheduled for later this month may be tricky. I am copying
this message to collaborators in southern MA and southern CT so they can
weigh in as well. 

Best,
Cynthia

Cynthia Boettner, Coordinator
Invasive Plant Control Initiative
Silvio O. Conte National Fish and Wildlife Refuge
U.S. Fish and Wildlife Service
103 E. Plumtree Rd.
Sunderland, MA 01375
Phone: 413-548-8002 ext. 115
FAX: 413-548-9725
Email: Cynthia_Boettner at fws.gov

Inactive hide details for Angie Shelton <anshelto at indiana.edu>Angie Shelton
<anshelto at indiana.edu>






	Angie Shelton <anshelto at indiana.edu> 
Sent by: apwg-bounces at lists.plantconservation.org 

	08/16/2012 09:37 AM




To

apwg at lists.plantconservation.org	



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Subject

[APWG] early-flowering stiltgrass	
	 	

Hello all, 

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.   

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.  

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.  


Angie Shelton
Department of Biology
IU Research & Teaching Preserve
Indiana University
Bloomington, IN 47405
812-855-1674
 <mailto:anshelto at indiana.edu> anshelto at indiana.edu
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