HomeMy WebLinkAboutItem XI - Wild Parsnip r A3924-15
Wild Parsnip
(Pastinaca sativa)
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ild parsnip is an herbaceous Similar species:Wild parsnip is
plant that establishes as a rosette distinguished from other species in the
Brendon Panke,Ryan deRegnier, Wwith upright leaves persisting parsley family by its yellow flowers and
and Mark Renz for at least one year.Plants flower in pinnately compound leaves,which are
subsequent years(typically 2nd or 3rd divided once into more than five leaflets.
year),but after plants flower,they die Golden alexander(Zizia aures;native)
(monocar IC erennial).Flowerin stems can bedistin distinguished parsnip b Its
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are stout,hollow,grooved,and up to 5`tall. earlier flowering time,shorter stature,
p less open appearance,and 2-3 pairs
caution:Sap contact with skin in the
presence of sunlight can cause a of leaflets.Prairie parsley(Polytoenia
rash that often leads to blisters nutta(Pid;native)can be distinguished
J i ll�ll�l/ and discoloration of the skin o parsnip by its oblong leaflets with
few
(phytophotodermatitis).Wear gloves,
teeth and rounded umbels.
long sleeves,and pants when handling. Ecological threat:
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Legal classification in Wisconsin: Invades prairies,oak savannas,fens,old
Restricted.The garden parsnip pastures,astures,and roadsides.
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vegetable is the same species as the Thrives in disturbed habitats and along
invasive form.The garden form is not edges of many habitat types.
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restricted. Can invade undisturbed grasslands.
1��III� ����� �)�� �� �� �������������� �� Leaves:Rosette leaves are pinnately Seeds are readilytransported b water.
compound with 5-15 broad,ovate Y
to oblong leaflets.Stem leaves are
alternate,with 2-5 pairs of opposite,
sharply toothed leaflets.Petioles wrap
it around the stem.Upper stem leaves are
reduced to narrow bracts.
Flowers:Late spring to midsummer.
Numerous small five-petaled,yellow
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flowers in flat umbels 2-6°wide at the
tops of stems and branches.
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Fruits and seeds:Seeds are approximately
0.25"in diameter,flat,round,yellowish,
and slightly ribbed.
Roots:Deep taproot
uw
Cooperative Extension
MANeNAGEM EN it of NNsNVAEAVE PLANTS iNMN VVISCO N sulk
Non,--d iernical control
Removal riburning Grazing
Effectiveness ssi W season*. -t Effectiveness in,season.-SO-70% Eff tiven s in s son: -709/a
Season a tr tt - r"/e Season after treatment:< , Season after treatment<5
Pulling or cutting the root from the stem Spring burns can kill germinating seedlings Readily grazed by a variety of animals,
are effective individual plant control and can suppress above-ground growth especially during midseason.While
techniques.Pull if soil conditions allow for of established plants depending on effective,if parsnip constitutes too great a
the removal of the taproot.Alternately,cut fire intensity.After the fire,established percentage of animals'diets they can also
the entire taproot with a sharp shovel or plants will quickly resprout and reinvade develop phytophotodermatitis.If grazing
spade 1-2"below the surface.If flowers are areas;this management method is not animals on parsnip,ensure that other
present,bag material and dispose of it in a recommended unless integrated with forages are included in sufficient amounts
landfill to avoid potential for seed spread. other techniques.Fire may benefit other to prevent injury.
species well-adapted to this management
Mowing (e.g.,prairie grasses),resulting in improved ManipulationEffec °
competition with parsnip.Burns also
t tt t " allow for increased visibility of rosettes for environment
Season aftertiraatentt 50-7,0% follow-up treatment since they are often
Mowing can be effective if timed after the one of the first plants to green up after a ��t"� �f a �
emergence of flower heads,but before burn.A handheld propane torch can be season,ao"eratme :<S °
seeds enlarge.Plants may resprout and effective for treating seedlings. Establishment and maintenance of
still flower,but rarely produce viable seed. vigorous species(e.g.,Solidago)may
Monitor populations and repeat mowing effectively compete with established
if concerned about seed production.Care populations as well as reduce the
must be taken not to mow when mature establishment of parsnip at a site.
seeds could be present as this will spread
the seed.Parsnip populations may increase Chemical control
after the initial mowing,but repeating
annually at the recommended timing for Foliar
3-5 years will reduce populations. Apply directly to individual plants
or broadcast across an infested area.
Broadcasted foliar applications are typically
the most cost-effective treatment in dense
infestations.Use lower rates on smaller
�rrr plants and less dense populations and
higher rates on larger plants and denser
populations.Use lower rates in the fall
since plants are more susceptible at this
timing.Spring applications require higher
rates,but if applied after seedlings emerge,
t ' they will control both seedlings and adult
plants.
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Ovcnprayordrift uzdcdmbleplants
KPIMENEEMEM should beavoided,ayeven minute
Effectiveness in season:90-100% quantities ofthe spray may cause severe Effectiveness inseason:9m-n0$%
Season after treatment:70-f90% injury toplants.Dnnot compost treated Season after treatment:70-90%
Common name:Many plants asherbicide can persist through Common product name:Roundup
composting process.��xa/ Rate:
broadcast:o.sS-l�e|ba.e/A broadcast-Q3-;O|ba.e./^
spot:For al8Uba.c/ga|product: CEMENMEEM spot:For ay|ba.c./ga{product:1-2%
1%(0.038|baa/gaV Effectiveness in (0�03-0V6!ba.e/gaV
Timing:Apply tnrosettes infall o,spring, Season after treatment:*0-90% Timing-Apply torosettes infall o,spring,
bolting,nrflowering m(ants. Common name:7e|a, bolting,o,flowering plants.
Caution:Use aquatically labeled product Rate; Caution:Use product labeled for aquatic
ifpotential exists for solution tocontact broadcast:u.s-1uorA\(0.«O-07Sor use ifpotential exists for solution m
surface water.Use nfthis chemical aj1A) contact surface waters.Applications
/nareas where soils are permeable, spot:O.04oz/gal(0u3ozmj/gaV can result inbare ground asglyphosate
particularly where the water table is Timing:Apply torosettes infall orspring, /snot selective,Qve,sprayordrift tn
shallow,may result ingroundwater b*ltin�mflowering pbm� desipmb�m�mushould be�vide±as
cuntaminabon,Qwaop,ayo,d,/ftom even minute quantities ofthe spray may
desirable plants should bcavoided,as Caution:n»not apply directly tvwate' cause severe injury top|ants_
o,»oa�aswhe'e»un�ccwa»eri,
�enminute qua,tu/e,vfthespmymay
cause severe injury»oplants. present.Can remain inthe soil for
months depending nnapplication rate.
Uveoprayo,drift tudesirable plants Effectiveness;nseason:90-1 000/a
CIMMEMMM should beavoided,aseven minute Season after treatment:90-100%
Eff4ctiveness in season:90-100% quantities nfthespray may cause severe Common name: Escort
!' Season aftertreatment. ' injury Rate'
Common name: Perspective broadcast:0.3-l.0oz/A
Rate: CIMMEMEEM (0.2-0aozvjiA)
broadcast:a.o-4.Soz6A spot:uo4oz/gal(o.ozvza.i/gpD
aminnrydnpyrach|m:1.2-1.8vza.i/x+ Timing:Apply u,rosettes infall vspring,
chlormlfummo5-u ���
' Common name:Weedmaste bolting,o,flowering plants.
spot:ula-o.zuz/ga| '
(aminocycopyrachlocn.0s-000vzaj/ nate Caution:Dvnot apply directly»uwater
gal+ch|o,su|fvmn:o.ou-n»soza.i/ga|) broadcast:1e-a2Mvz6^ o'ooareas where surface water is
W �
icamba�o�/�-V�z7|b" / +
x2�+D: present.Remains inthe soil for months
T��mg��p�y»vms��sm�Uo',pnn� o.ln_os6|bae/� depending omapp|�auon��.
b«km�«'Mvwr'i»gn|a»�� spot:o.8%(dicomba:o.00p|ba.e/ga|+ Overspmyo,drift u,desirable plants
Caution:Donot apply directly towater 2,4+;:0o11 |bn.eJga0 should beavoided aseven minute
»'mareas where surface wateris Timing:Apply mrosettes infall v,spring, quantities ofthe spray may cause severe
present.Avoid using inareas where bolting,o,flowering plants. injury*`plants.
soils are permeable,particularly
where the water table is shallow,as Caution:Cwnot apply directly'owate,or
groundwater contamination may result. »oareas where surface water ispresent, Herbicide information/sbased onlabel
Perspective remains inthe soil for Use ofthis chemical mareas where rates and reports by researchers and d
months depending nnapplication rate soils are permeable,particularly where "managers.Products known,vprovide,
andhas�hepmenda|�mcon�amina�e mcwa�e'�ab|�i``ha|1o°^may,�,v|,in i,�|,�°ar»���o=�a°",�effective control or in m'n use are
rovide sufficient
surface runoff water,especially on groundwater contamination,8vcopray control o"lack information for effectiveness
poorlydraining u,drift u,desinb|rplants should be on���y��e n�eu�mqm�eu,
avoided asevenminu�equanu«e�nf neeerceutopctmuepmuucsiohis
sha||vwg,ound�a��c�ain�cnanceofa ' publication are convenience u
strip the spray may cause se»e� mendorsement
i»j«'Y�» not an
between the areas perspective i, plants.Rates>|*oz/«(o.5|bo.e/n) mrasimilar nmduct.x,uare responsible
applied and surface water featu,es may for=mopouooc,maco�oanmwonme
� label directions.Read the label before any |
sucha�smuo�hb,ome
' . ovp�^oen |
°��weim���iem��.i.) sensitive grasses,
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MANAGEMENT OF lNVASiVE PLANTS IN WlSCOINS11Nm WI LD IP A RSNVP
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This series of fact sheets was created in cooperation with University of Wisconsin-Extension Team Horticulture.
This material is based upon work supported by the Cooperative State Research,Education,and Extension Service, UW
U.S.Department of Agriculture,under Award No.2009-45060-06000. Aftiffnsion
Copyright C 2012 by the Board of Regents of the University of Wisconsin System doing business as the division Cooperative Extension
of Cooperative Extension of the University of Wisconsin-Extension.All rights reserved.Send copyright inquiries to:
Cooperative Extension Publishing,432 N.Lake St.,Rm.227,Madison,WI 53706,pubs@uwex.edu.
Authors:Mark Renz is an assistant professor and Extension weed scientist in agronomy,College of Agriculture and Life Sciences,University
of Wisconsin-Madison and University of Wisconsin-Extension.Brendon Panke is an associate research specialist in agronomy,College of
Agriculture and Life Sciences,University of Wisconsin-Madison.Ryan deRegnier is a research assistant in agronomy,College of Agriculture and
Life Sciences,University of Wisconsin-Madison.Cooperative Extension publications are subject to peer review.
University of Wisconsin-Extension,Cooperative Extension,in cooperation with the U.S.Department of Agriculture and Wisconsin counties,
publishes this information to further the purpose of the May 8 and June 30,1914,Acts of Congress.An EEO/AA employer,the University of
Wisconsin-Extension,Cooperative Extension provides equal opportunities in employment and programming,including Title IX and ADA
requirements.If you need this information in an alternative format,contact Equal Opportunity and Diversity Programs,University of Wisconsin-
Extension,432 N.Lake St.,Rm.501,Madison,WI 53706,diversity@uwex.edu,phone:(608)262-0277,fax:(608)262-8404,TTY:711 Wisconsin Relay,
This publication is available from your county UW-Extension office(www.uwex.edu/ces/cty)or from Cooperative Extension Publishing.To
order,call toll-free:1-877-947-7827(WIS-PUBS)or visit our website:lea rningstore.uwex.edu.
Management of invasive plants in Wisconsin:Wild parsnip(A392445) 1-10-12
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