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Home My WebLink AboutResolution 95-145 06/19/1995 ' RESOLUTION NO. 95-145 N.C.S. 1 of the City of Petaluma, California 2 3 RESOLUTION ADOPTING GUIDELINES FOR TREE PLANTING 4 IN THE DOWNTOWN AREA 5 6 WHEREAS, Chapter 3 of the Petaluma General Plan encourages the adoption of a street 7 tree planting and management program for the City and aCity-wide pattern of healthy S street trees; and 9 10 WHEREAS, the City Tree Advisory Committee has recommended adoption of Downtown 11 Area Tree Planting Guidelines, to assist in the implementation and long term success of 12 tree planting projects; and 13 14 WHEREAS, notice of the proposed Guidelines has been published, and all pertinent 15 recommendations and testimony has been duly considered by the City Council; and 16 17 WHEREAS, the proposal is exempt from envii•onmenta] processing requirements pursuant 18 to Section 15061 of the California Environmental Quality Act (CEQA) Guidelines because 19 it will have no significant adverse impact to the environment; 20 21 NOW THEREFORE BE IT RESOLVED that the Petaluma City Council hereby approves 22 and adopts the proposed Downtown Area Tree Planting Guidelines as reflected in the 23 attached Exhibit A. 24 25 26 o~l9~e~~~prs Under the power and authority conferred upon Chia Council by the Chatter of said City. REFERENCE: I hereby certify the foregoing Reeolution wsa introduced and adopted by the APF form ~ ~ Council of the City of.Petaluma at a (Regular) ~dI~) meeting on the ytll daY of .........._~.l(tl.Q._................................-.-.. 19.~..`~2... by the ~ following vote: _....---•City Attorney~~--~~~~~ AYES: Shea, Maguire, Barlas, Stomps, Hamilton, Vice Mayor Read NOES: None ABSENT: Mayor Hill' M ,f i ATTEST: ....Y.lt:.~.'-..1...43.Y..::.....- _-....-....,.Q..-_........ City Clerk ~ ~ Mayor CA 1085 Res. Na.. 9.5_5-..._... N.C.S. • fix. ~ . City of Pefaluma .DOWNTOWN AREA - TREE PLANTING GUIDELINES INTENT - The following guidelines have been developed to assist in the selection of appropriate tree species for the downtown environment,. identification of good quality plant matenals, and utilization of City-approved installation methods for plantings in or adjacent to public sidewalks and streets. • TREE SELECTION The following trees have qualities which make them particularly suitable to the urban ._r environment of the downtown„area; including, compact, open or narrow form, tolerance to compacted soils, drought resistance, low litter production, deep rooting: habit, disease resistance, and good overall adaptability to Petaluma's, _oIls and climatic condttions. More specific information may be obtained about individual tree species by consulting the City Street Tree List, nursery supplier's, or garden books. Deciduous Trees Carpinus caroliniana Celtis:australis; C. sinensis Fraxinus oxycarpa "Raywood";F. holotricha "Moraine" ' Ginko bIloba "Autumn gold;' "Saratoga," "Fairmont" (male only) i Lagerstroemia~indica "Indian Tribes" Pnmus cerasifera "Krauter Vesuvius," "'Thundercloud" • Pyrus calleryana "Redspire;" "Aristocrat,''"Capital,''.'Chanticleer' . ` Sapmm sebiferum Tilia cordata "Chancellor," Degroot," "Greenspire" Everereen Trees ' Laurus nobilis "Saratoga" Magnolia "St. Mary's" ;'j' Pyres kawakami Melaleuca sttyyppheliodes Ulmus parvifolia Restricted GrowingSpace Arbutus unedo, standard Carpinusbetulus "Fastigata" ;a Feijoa selloana„ standard Ficus nitida • Phoiinia fraseri, F: serrulata, standards Raphiolepis "Majestic Beauty" standard. :;r~ Tristania laurna "Elegant" Re so 9 5 - i 45 ~IC>S ~ l ' $.pecial Considerations in Selecting Trees: ' 1. Diversity in species throughout the downtown area is encouraged, to .aid in the control of-plant disease. However, it is recommended. that no more than one species be utilized across the frontage of a single property. The mixing ofeveigreen with deciduous trees should. be considered carefully, to avoid creation of a haphaiard element in the streetscape. 2. Species from he "Restricted. Growing Space"list are° typicaIly very short or narrow in growth habit, and recommended for userwhere tree canopy space is very limited,. adjacent to buildings with significant architectural interest (to permit vistbihty) or near overhead utilities, and' awnings (to avoid conflict), 3. Pear varieties should not' be mixed along, the .same stretch of street, to ensure consistent form and bloom effects. However, different varieties may be planted on different' streets. "Aristocrat" pear has been.. established along some downtown streets (eg., Kentucky Street and Western Avenue) and should be continued across other properties in the same vicinity. 4. Some species may produce tiny seeds, fruit; or nutlets. In choosing tree species, consideration should be ,given to maintenance issues associated with the indtvidual planting sites selected. SIZE SPECIFICATIONS 1. Trees shall be 15 gallon:size minimum. 2. Ball and burlap trees shall have a m;n;mum'root ball size of 18" to 22"wide. and 18" deep. - 3. All trees shall meet the following minimum size criteria: a, minimum trunk caliper to be 1 inch measured at 3.5' up trunk. b. minimum pplanted height to be 8' tall. c. minimum heightfrom ground to bottom of-head to be 6'. PLANT QUALITY SPECIFICATIONS No tree should be accepted, that will not stand upright after nursery stakes have- been .removed. Trees should return to a vertical position after their tops have been deflected horizontally and released. Trunks should. exhibit sufficient caliper to properly support head weight and should exhibit well developed trunk taper from loot crown to begtmm~g of branching. Bark.should be-.free of abrasions or damage of any type, and should. not exhibit symptoms of sunburn. Small"branches along the trunk should 6e maintained for afew-years to atd in shading the trunk and ptomotuig caliper growth. ' Sympptoms of pastor present pest infestation or disease infection are grounds for rejection ~ of plwt materials. 12eso, ~S- I~}5 NCS Trees should not have been pruned by heading in any manner. 1n certain• species, top ' pinching to encourage lateral o owth is acceptable. A uniform pattern of established lateral branches should exist at time of planting: Lateral branches should be uniformly spaced vertically and radially along the trunk,. forming a well balanced head. Each main ateral branch should have a caliper less than 3/4 that of the trunk, measured one inch from or above the crotch in questron. Each, main lateral branch shall have a strong attachment to the trunk. Narrow crotch angles and/or imbedded bark in crotch is grounds:for rejection. Top growth should exhibit good vigor and annual growth°typical for the species and for the time of year inspection takes place. Indicators used to determine vigor are leaf color and size, length of terminal growth, and color and condition.of bark. Roots should be healthy and extend to the bottom and sides of the root ball, whether containerized or ball and burlap. Feeder roots should ,be present at the edge of the rootball and should be white in color. Rooting'should be extensroe enough to hold the rootball together during planting but not rootbound. Root structure should be uniform around the circumference of the rootball with well developed lateral roots. Roots should not show any sign of deformity such as kinked, circulat, or distorted growth patterns. Circling roots ataprevious container size (liner, one gallon, five-gallon) should not be acceptable. Root development should be such that container and soil can be lifted by the trunk and the trunk should not rise more than. one inch before the soil surface of the rootball begins to rise. Trunk surface root zone°should be free of roots that are seriously kinked or circling. All trees should be inspected by a qualified arborisf,or-horticulturist prior to planting, and should be rejected if the noted quality standards are not present. It is strongly recommended that these quality criteria be forwarded to the contractor's nursery supplier during the bidding process. INSTALLATION SPECIFICATIONS Planter areas should be as large as possible, to permit optimal soil exposure,. water penetration and oxygenation of roots, and to reduce the likelihood of future damage to adjacent paving: Planting wells should measure at least 3' in width and 5' in length formost trees. An excavation permit must be approved prior to removal of pavement in the City right-of-way. City of Petaluma standards for tree and root barrier installation .shall be met. Specifications and- details may be obtained from City Public Works, Planning or Parks department offices. Tree grates may be required, as determined by the Duector of Public Works. After tree installation is complete and yearly thereafter, an application of time-released fertilizer should bz added to the soil surface, at' the rate recommended by the manufacturer. A 2" depth of organic mulch (eg:, .ground or shredded bark) should be .maintained azound the tree to retain soil moisture; provide nutrients, and reduce weed Reso . 45-14 5 rJGS 3 ~'~p~ 1~~~~~ ~ ~ growth. Annual replenishment of mulch is recommended. 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