280.10 PROHIBITED TREES AND SHRUBS ON CITY PROPERTY.

   These plants are prohibited as new plantings and as replacements on all City-controlled property:

(a)   Trees overly susceptible to disease or insect problems:

         Boxelder (female) - susceptible to boxelder bugs

         Paper birch yellow birch - susceptible to leaf miners

         European birch - short lived due to bronze birch borer

         American chestnut - susceptible to chestnut blight

         Cotoneaster - fire light can destroy them

         Hawthorns - susceptible to hawthorn rust and fire light

         Eastern red cedar - susceptible to cedar apple rust

         Blue spruce - die after 25 years due to cytospora canker

         Eastern white pine - susceptible to blister rust

         Northern pin oak - oak will disease

         American Elm - severely affected by Dutch elm disease

         Russian olive - invasive

         Lombardy poplar - invasive negligible wildlife benefits

         Black locust - affected by locust borer

         Silver maple - surface roots, weak branches

(b)   Trees with negligible aesthetic value or with tendency to be "Dirty":

Horse chestnut

Tree of heaven

All catalpas

All willows

All ginkos

All poplars

Cottonwood

Moline elm

(c)   Shrubs and other plants:

Barberry - alternate host for black stem rust of wheat Tartarian

         Honeysuckle - vulnerable to aphids; witches' broom

         Mulberry - invasive

         Multiflora rose - invasive

         Trumpet vine - invasive

         Kudzu - VERY invasive

         Leafy spurge - noxious; invasive

         Purple loosestrife - invasive; illegal in some states

         Canarygrass - mate easily - invasive

         (Ord. 95-61. Passed 11-2-95.)