(A) Regulated genera, species, cultivars or varieties for which growing, sale, importation or planting is prohibited include the following:
(1) Genus Cupressus—Cypress—all members.
(2) Genus Juniperus—"Juniper" a/k/a "Cedar".
(a) Male members of the species, cultivars or varieties.
(3) Genus Morus—"Mulberry"—all.
(4) Genus Populus—Cottonwoods and poplars—All species, varieties or cultivars of the genus excepting P. fremontii var. Wizlizenii "Rio Grande" Cottonwood and P. tremuloides "Quaking Aspen," and P. acuminata, "Lance leaf or Mountain Cottonwood" providing that each of the named species of tree sold is labeled as high pollen/high allergen potential.
(5) Genus Ulmus – "Elm" – all members except those listed in divisions (B) and (C).
(B) The following genera and species of wind pollinated trees may be sold and planted in the city provided that they are identified as high pollen/high allergen potential by means of individual labels.
(1) Platanus—"Sycamore"—London Plane Tree.
(2) Fraxinus—"Ash".
(3) Chinese elm - ulmus parvifolia.
(C) The following species of non-flowering and non-pollen producing trees may be sold and planted in the city:
(a) ulmus Americana – ascendens;
(b) ulmus glabra – horizontals;
(c) ulmus minor – gracilis; and
(d) any other non-flowering trees.
(Ord. 34-1994; Am. Ord. 45-1996; Am. Ord. 40-2004; Am. Ord. 56-2004)