Emerald Ash Borer Management Plan DiscussionPublic Works Department
Memorandum
TO: Honorable Mayor and Members of the City Council
FROM: Jay Strachota, Streets & Parks Superintendent
DATE: April 3, 2013
SUBJECT: Emerald Ash Borer Management Plan Discussion
The Emerald Ash Borer (EAB) is an introduced pest that is killing ash trees in Michigan,
Indiana, Illinois, Ohio, Delaware, Wisconsin, Ontario, and now Minnesota, and as close
to us as southwest Minneapolis. Since its discovery in Detroit, Michigan in 2002, the
borer has spread, killing virtually all ash trees in its path. Experience in infested states
has demonstrated that developing an EAB management plan is a critical component to
managing a pending infestation.
Public Works is currently putting together an EAB management plan and at the same
time preparing pro -active strategies for EAB control to be implemented this summer.
The work this summer will help level the cost and workload associated with hundreds of
public ash trees dying in a short period of time in the future.
At the April 9, 2013 work session we will primarily discuss two key components of the
management plan. Implementation of good communications/education tools is a key
component of the management plan and a very important first step. The other early and
key component is the pre -infestation work for this summer which include plans to
selectively treat trees to prolong their life and selective removal of some public ash
trees that are in poor condition, hazardous, or miss -sited in advance of infestation —
both best management practices.
Information is still being gathered to complete the EAB management plan. With the
input from this work session and the additional information gathered, the plan will be
presented prior to Public Works budget discussion for 2014.
J
OWJ'MERvA._LD,,_1_
N DEGLI
ize a The typical patters
vity, the'A `ciwn decline cause>
en a talf is often, AB is the top
r
to detect even in first and then progressing
:� ��- l
f high infestation- ''` down the tree.
LARVA
The distinctly segmented
larva is relatively easy to
locate by peeling back loose
bark of infested trees.
SHAPED GALLERES
I
w" Even after larvae have
matured and exited the tree,
the distinct S-shaped
galleries under the bark
are diagnostic of EAB.
D -SHAPED EXIT HOLES
Although they are difficult
to find; D -shaped exit
holes are diagnostic
of EAB activity.
EPICUMilO S�PRONT
As the"top of the`tr`ee decl
new shoots may be produ
lower on the tree.
SYMPTOMS ON MULTIPLE TR
E .
Detectable levels of EAB infesta
almost always include a number o -
ing ash in an area. Always look for other
ash ne rby with similar symptoms .
WOODPE, R OLES
Woodpeckers love EAB larvae and woodpe.cke
holes may indicate the presence of EAB t.
However, not all EAB infested trees are
attacked by woodpeckers and other insect
larvae may also attract woodpeckers.
For more information on the EAB threat in Minne _ota'br to report a possible EAB -infested ash tree:
(651) 296-6684, www.mda.state.mn.us / keyword: ash borer
i� In accordance with the Americans With Disabilities Act, an alternative form of
4s
,fin � •�
ld'' �%
.
For more information on the EAB threat in Minne _ota'br to report a possible EAB -infested ash tree:
(651) 296-6684, www.mda.state.mn.us / keyword: ash borer
i� In accordance with the Americans With Disabilities Act, an alternative form of