Laserfiche WebLink
FACT SHEET #4 <br />Siberian Elm Uly►-���5 ��yfZrtl� <br />�escri�tion: <br />Siberian elm is disti�iguished by s�3taCk. ellipiic, <br />smooth above_ toothed ieaves, nearly even at the <br />bast, 0.8-2.C" (2-7ctn�long. Altcrnale simple <br />lcaves short poiEited at the tip and tapering or <br />rounded at asymmetrical base; dark green above, <br />paler and nearly hairiess beneatl�. Mature heigl�t <br />50-7U', round crown of s1eE�der, spreacfing <br />br�ncl�es; rough ba�lc gray or b►own and <br />shallowly furro�ved at maiurity; nearly hairless <br />twigs and small, blunt buds. Flawers greenisEi, <br />lack petals, occurring in small drooping clusters <br />of 2-5, Fniit one-seeded, smooth, circular, 0.4- <br />0.6° (LO-ISmm) wide, in clusters. <br />�oncer�: <br />A native of nortl�ern China, easter�i Siberia, �'�`� ,� _� ,,� <br />Manchuria and Korea, Siberian eln� was �� <br />� <br />iniroduced to lhe U.S. iiti the 1860's for ils " ' <br />hardiness and fas� growth in a varieiy oC "`�`�`" � AL �" <br />�. ,.. <br />moisture regimcs ai�d habitats, induding ��. ;, �. <br />drougnis and cold winters. 5eeds are produced '{,� _ ,�i <br />early in spring and spread by the wind. :�,,. ;� � <br />�� <br />Germination ra[e is high and seedli��gs soon ��� .` _, _ <br />establish in dte bare ground four�d early ir� ihe �' �.�` � � <br />growing season. Near a seed source seedling ,� �� ``' ��� <br />thidcets quicicly crowd out and dominate native <br />vege[alion, espccially in disturbed or sparsely <br />vegetated areas. MN Interagency E�:otic Species <br />Taslc Force 199i current tlireat rai�lcing of MODERATE, future thrcat ranking of SEVFRE. <br />5iberian elm Ul,r�zr,s u1t� �iilla <br />Control: <br />March-May: A rcgi�lar rcgi�ne of E�rescribcd burnin�; ii� fire adaptcd com�nu�utics will kill secdlings. Removal of on <br />site seed sources by oll�er metl�ods is necessary'for adequatc contro}. <br />Mid-May to Ju1y: Trees girdled in mid-Mny to early Jaly wilf die ovcr 1-2 years wilho��t sprouling if�c�it properly_ <br />Cut tiirough the bark slightly dccper tlian tl�c cambiml� in lwa parallcl cuts 3-�1 inchcs apart, tlicn knocl< barlc aff wi�l� a <br />blunt object such as tiie bacic of an axe head or dull end of a girdEing bar. Tt�e aylem must remain intacl; if girdled toa <br />deeply the trec wilE respond as if cu� down, i.e. it wi{1 resprout_ <br />April to Septemher: During ti�e grot��i��g scasou, seccili�lgs can be hand pulicd aiid sn�all lrces carcfully removed by a <br />grub hoe or seeed �vrencli. Althougl� labar intcnsivc, iarbe trecs can be c�ti doti�n and icsprou�s �rimmed as needed. <br />�►pril to September- After spri�ig sap f]o��• and througl� [lic gro�+•�ng scasan, a cu� st����p �i�.}�ifCailOi] Gi <br />water:Roundap (gly��has:�tc) solu(io�i beuveen 9:1(10`%�) and -�:I(2U"/„) conce��traiion hti� haiid spraycr is effccti�•e. MN <br />DNR State Parks Region V Rcsource Managcmcnt «scd a�J:I Round«p so;u�ion ��ieli good result.s. <br />This inFomtnlirn� is ni�t aiti endorsem�nt aFparlicular rruducls or rra�tices. i'esiicicl� us� mu�t I�ullrns� I,ih�l dsr�ctiars ;uid applic��hla s�a�� and F�deral I�itt�s <br />ivEinnesuta D.partment c09;94 <br />oFNaiural Rasuiirccs Sources on �I� with 1�1N DNR R�gion �' tilalr P�rhs k�suurc� \lan:�g�r- sibelm2.duc <br />Regiun V(Sp7}285-7�1}2 ]Ilinois i�'auirz Pr�sac�•�s Crnninissiur ���g��a[iun \�[an;i��m�i:� Ciuiciclin� �,u Sih�ri,ui lr:hii SFW/I�EF3 <br />