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Invasive Species Assessment Report
DEVELOPED FOR
Raymond Rine, Landowner
Located in Section 18 Town of Price, Langlade County
BY
Chris Arrowood, Coordinator
Timberland Invasives Partnership
On 3/10/2017 with funding provided by the Wisconsin Department of Natural Resources Weed
Management Area Private Forest Grant Program, and the Langlade County Land Records &
Regulations Department and additional support from the Langlade County Forestry &
Recreation Department.
Invasive species management is an on-going, dynamic
endeavor; often changing as more is learned.
Table of Contents
Introduction .................................................................................................................................................. 2
Site Assessment ............................................................................................................................................ 2
Legal Description....................................................................................................................................... 2
Site Description ......................................................................................................................................... 2
Survey Methods ............................................................................................................................................ 2
Site Selection............................................................................................................................................. 2
Survey Execution ....................................................................................................................................... 2
Suspected Invaders ................................................................................................................................... 3
Survey Results ............................................................................................................................................... 3
Map of Surveyed Invasives ....................................................................................................................... 3
Species Profiles ......................................................................................................................................... 3
Garlic Mustard ...................................................................................................................................... 3
Buckthorn............................................................................................... Error! Bookmark not defined.
Recommended Response ............................................................................................................................. 4
Method of Control .................................................................................................................................... 4
Local Contractors ...................................................................................................................................... 4
Funding Options ........................................................................................................................................ 4
Appendix A. Legal Description Sheet from website Political Map ................................................................ 5
Appendix B. Satellite Map of Property ......................................................................................................... 6
Appendix C. List of Reports to GLEDN........................................................................................................... 7
Appendix D. DNR Priority Invasives List ........................................................................................................ 8
1
Introduction
The purpose of this report is to inform the landowner about invasive species located on their
property. This individual report is part of a larger effort to assess the abundance of several
invasive species, including Garlic Mustard (Alliaria petiolata), along the Langlade County
recreational trails, which may be serving as a pathway for their spread. The Timberland
Invasives Partnership and the Langlade County Forestry & Recreation Department are available
to answer any questions relating to this report or invasive species in general.
Site Assessment
Legal Description
The property associated with this report is legally described as PT SW SW SEC 18 T32N R12E
BEING THE E25.900 ACRES THEREOF (MFL DOC#347444) (MFL TRANS DOC#431210) or
Parcel ID number 0240283.001 on the Langlade County Website. (Appendix A)
Site Description
This property is located approximately ½ mile West of Hill Road and ½ North of County
Highway O in Central Langlade County (Appendix B). For the purposes of this survey, the best
point of access is via the recreational trail were it crosses Springbrook Road to the West, but it
may also be accessed from a private road from County Highway O. This property is undeveloped
forestland with minimal disturbances except for logging and recreational traffic along the public
recreational trail, which is .25 miles long and runs primarily North and South.
Survey Methods
Site Selection
This property was prioritized for inventory by the Langlade County Forestry & Recreation
Department due to: its forested status; the presence of the public recreational trail; proximity to
public forest lands, and a history of landowner cooperation.
Survey Execution
To maximize the likelihood of the detection of the primary species of concern, Garlic Mustard,
surveys were conducted in the spring, when Garlic Mustard is blooming. The recreational trail
was walked with a Trimble GPS unit, and when small patches of invasive species were found the
date, time, location, size, species, density, and observer information were recorded. For large
patches, the same information was recorded, but with multiple data points to help assess the
true size of the population. Data was then uploaded to a computer, edited (if necessary) to
reflect field observations, and uploaded to the GLEDN Website. (Appendix C)
2
Suspected Invaders
While Garlic Mustard was the primary species of concern, any invasive species detected was
reported, especially those found on the Priority Invasive Species List for Langlade County
developed by the Wisconsin Department of Natural Resources. (Appendix D)
Survey Results
Map of Surveyed Invasives
X
Species Profiles
Garlic Mustard
Garlic Mustard (Alliaria petiolata) is an herbaceous biennial herb that favors the low-light
growth of forest understories. In the state of Wisconsin this plant is Restricted under the NR 40
Invasive Species Law. Garlic Mustard is capable of spreading quickly, outcompeting native
plants, and interfering with understory growth and tree regeneration. First year plants begin as
a basal rosette of heart-shaped toothed leaves. Plants overwinter as rosettes and bolt in spring
sending up stems 1-4’ tall with more triangular, alternate leaves. Garlic mustard can be
identified by the strong garlic odor of crushed leaves. Soon after in late spring/early summer,
plants produce numerous small white flowers, making the plants easier to spot in the woods.
Once pollinated, the flowers develop into long seed capsules, capable of producing thousands of
seeds per plant. The small black seeds are easily spread and are viable for up to 10 years making
containment an important step in the management process.
Garlic Mustard is considered the only high priority species in this plan. While it is the most
widespread and the least likely to eradicate, it also has the greatest potential to negatively
impact the property’s forest ecosystem. Garlic Mustard also poses a high risk to continue
spreading onto neighboring county and private land. Because of the location of a public rifle
range next to the infestation, there is also a high risk that seeds could be picked up by members
of the public and transported across the greater Crandon area.
Garlic mustard may be controlled by chemical or manual methods, or a combination. Herbicides
may be applied to plants in the rosette stage (typically in fall) or 2nd year plants before
flowering. Adult plants may also be hand pulled at any time before seeds are released, however
any plants with flowers or seeds should be disposed of to prevent/kill viable seeds. This can be
accomplished by bagging and landfilling plants.
3
Recommended Response
Method of Control
Regardless of the method chosen, it will be critical to the success of management efforts to begin
control as soon as possible.
Option 1 or 2, MIPN Tool if too intensive
Local Contractors
If you are unable to conduct control measures on your own you may be interested to know the
following contractors are willing to work on invasive species in this area.
XXX
XXX
If too expensive may seek out
Funding Options
If you are interested in seeking out funding to aid you in controlling invasive species, there are
several resources at your disposal, but one of the most important to be aware of is the Wisconsin
Invasive Species Council’s Financial Assistance Tool (www.invasivespecies.wi.gov/financialassistance). This tool will help you find programs to help support your control efforts. If you
need help understanding these programs, you can always seek out the Timberland Invasives
Partnership Coordinator, the Langlade County Forest Administrator, or the Langlade County
Conservationist.
Timberland Invasives Partnership Coordinator: 715-799-5710 x3
Langlade County Forest Administrator: 715-627-6300
Langlade County Conservationist: 715-627-6292
4
Appendix A. Legal Description Sheet from website
Political Map
5
Appendix B. Satellite Map of Property
6
Appendix C. List of Reports to GLEDN
7
Appendix D. DNR Priority Invasives List
Scientific_Name
Alliaria petiolata
Anthriscus sylvestris
Berberis thunbergii
Caragana arborescens
Celastrus orbiculatus
Cirsium palustre
Cynoglossum officinale
Digitalis grandiflora
Dipsacus Fullonum/laciniatus
Dipsacus laciniatus
Elaeagnus angustifolia
Euphorbia esula
Fallopia japonica
Fallopia sachalinensis
Frangula alnus
Glyceria maxima
Impatiens glandulifera
Lamium maculatum
Lonicera maackii
Lupinus polyphyllus
Lythrum salicaria
Myosotis sylvatica
Pastinaca sativa
Phragmites australis
Robinia hispida
Robinia pseudoacacia
Rosa multiflora
Sorbaria sorbifolia
Torilis japonica
Valeriana officinalis
NR 40 designation
R
P
R
R
R
R
R
PENDING
R
R
R
R
R
P
R
P
P
PENDING
P
PENDING
R
R
R
R
R
R
R
PENDING
R
R
8