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11.3 Attach the ties to the tree in a manner that allows the tree to move but still <br />be held firmly in place.. This will help develop trunk taper and add strength to the tree. <br />R-7.280-E Establishment Standards. <br />1. P ri The establishment period for an original tree or replacement tree shall <br />begin on the date that the tree is initially installed, or the date it is replaced, and' extend for a three <br />year period from that date. <br />2. rin .During the establishment period, each tree shall receive 15 gallons of <br />water per week during the growing season from April 15th through October 15th. Water shall <br />be provided in a manner that allows penetration into the soil around the tree. <br />3. Sta ing. Stakes and ties shall be maintained during the establishment period in a <br />safe and effective manner. Stakes and ties shall be removed after the first growing season or one <br />year after installation. <br />4. Aching. During the. establishment period a minimum 3 ft. x 3 ft. planting area <br />around each tree shall be maintained with a layer of bark mulch 2-4 inches in depth. The mulch <br />shall be kept at least 2 inches away from the trunk of the tree, and the mulched planting area <br />around the tree shall be kept free of weeds., <br />5. in <br />5.1 Dead, broken or split branches shall be pruned at the time of planting. <br />5.2 Trees shall be pruned to remove branches that are crossing, damaged, <br />diseased, broken, or have included bark. <br />5.3 Trees shall not be topped or reduced in height without prior approval of the <br />Urban Forester. <br />5.4 Trees shall be pruned so at least two thirds of the tree's height is canopy <br />with one third of the height being the trunk. <br />5.5 The lower limbs shall be pruned off or tipped back to meet compliance with <br />the requirements for clearance over sidewalks and streets as contained in the Eugene Code, <br />1971. <br />5.6 initial structural pruning shall be performed at -the end of the three year <br />establishment period. A strong scaffold branch structure shall be developed by pruning <br />to select the primary scaffold branches. <br />Administrative Order - 10 1 i/11!96 <br />