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owner. <br /> ¢. Low Risk Elm Trees: .Los ri~k e~m trees shall be those <br />trees that show early stages of infection ~n June or subsequently <br />beyond the 30 percent wilting point. Every reasonable effort <br />shall be made to have low risk trees removed within 20 days of <br />notification of the property owner, but in no case shall it be <br />later than April 1 of the year following the appearance of <br />symptoms. <br /> d. Oak Trees: All oak trees within the designated oak <br /> wilt c0 %r01 area of the city diagnosed as having oak wilt should <br /> of the same <br /> be isolated from nelgh~Orln~ <br /> healthy oak trees <br /> species by chemical or mechanical disruption of co~u~on root <br /> systems to prevent root graft transmission of the oak wilt <br /> fungus. <br /> To control the overland spread of oak wilt, the pruning of <br /> oaks shall be avoided during the most susceptible period of <br /> infection, from April 15 until July 1. If wounding is <br /> unavoidable during this period, as in the aftermath of a storm or <br /> when the tree interferes with utility lines, a tree wound <br /> dressing shall be applied immediately. <br /> 1. To prevent the oak wilt fungus from producing <br /> spores and to prevent overland spread of this fungus, any <br /> diseased material of the red oak group wilting in July and <br /> August of one year shall be declared hazardous the following <br /> spring, from April 15, until July 1. <br /> oak wood to be used as fuel wood or to be. <br /> Any hazardous ...... t be debarked or else <br /> salvaqed for other purpose~ ~,.~ ,~ ~ ~ ~reater~ from <br /> completely covere~ b% _~ k~ ~ear following the appearance <br /> April 15 until J Y .... :--- ~ere is no danger of spore <br /> of sYmpt°ms. After to be covered. <br /> <br /> Any branch greater than 2" in diameter of the red oak <br /> group determined to be hazardous ~nd. nn°t to be salvaged <br /> shall be disposed of by burning, chlppl g, or removal to an <br /> authorized dump site prior to April t5 of the year following <br /> e of s proms. Dead standing red o~ks that <br /> the ap~eara~c ..... ~Y~t~e notential for spore production need <br /> have a~vancea ~=3u~ - r ' e <br /> not be removed except where they constltut a hazard to life <br /> and/or property. The city tree inspector will advise <br /> accordingly. <br /> Stumps of trees of the red oak group removed due to oak <br /> wilt shall be completely covered, removed, or debarked to <br /> the ground line to eliminate all possibilities of spore <br /> infection and overland disease spread. <br /> 2. white oaks: Trees of the white oak group (i.e. <br /> white oak, bur oak, bicolor oak) diagnosed as having oak <br /> <br /> <br />