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.)