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Upper Amazon Creek <br /> C b) Guidelines for Tree and Shrub Plantings <br /> Notes <br /> • Plan for a 400' section <br /> • Plants not planted in clusters should be planted along the whole section in an even <br /> spacing. <br /> • If a species is included in more than one planting zone, a single cluster across both zones <br /> can be displayed. <br /> • To allow adequate conveyance, NO plants should be near bridges. Leave a distance of <br /> approximately one bridge width on either side of each bridge unplanted. Leave 20 feet <br /> unplanted centering on each outfall. <br /> • Black cottonwood should not be planted near structures, facilities, or gathering places, <br /> because older trees have a tendency to shed branches and frequently fail. Similarly, as <br /> trees mature they may need to be removed in areas where they put humans at risk. <br /> However, in some areas, it is desirable to maintain a younger, vigorous stand of <br /> cottonwoods and standing snags, that pose little risk to humans, to serve as habitat trees. <br /> • There are two Oregon ash forests along this stretch. These areas will have `fingers' of <br /> Oregon ash planted to connect them with the creek, while maintaining visual access to <br /> the jogging trail for safety purposes. <br /> Plants Total Number Plants Planting <br /> Latin Name Common Name Qty of Plants spacing Zone <br /> 4. Both per within <br /> Banks Clusters Clusters <br /> Alnus rhombifolia White alder 6 - 3 <br /> Alnus rubra Red alder 4 - 3 <br /> Fraxinus latifolia Oregon ash 60 4 -6 10' -15' 1 & 2 <br /> a <br /> Pinus ponderosa Ponderosa pine 4 1 <br /> H Populus balsamifera ssp. Black cottonwood 12 4 -6 10' -15' 2 <br /> tricho. <br /> Quercus garryana Oregon white oak 8 - - 1 <br /> Salix lucida ssp. lasiandra Pacific willow 20 - 2 <br /> Amelachier alnifolia Western 6 - - 1 <br /> serviceberry <br /> Berberis aquifolium Tall Oregon grape 30 4 -6 5' 1 & 2 <br /> v) Crataegus douglasii Black hawthorn 15 2 -4 7' 2 <br /> Physocarpus capitatus Ninebark 12 2 6' 1 <br /> &D Rosa nootkana Nootka rose 12 5 -10 5' 1 & 2 <br /> Salix hookeriana Hooker's willow 30 - - 3 <br /> Salix sitchensis Sitka willow 30 - - 3 <br /> Symphoricarpus albus Snowberry 60 5 -10 5' 1 & 2 <br /> Total 299 <br /> c <br /> 15 <br />