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and form. Generally, all large trees shall be planted forty <br /> (40) to sixty (60) feet on center; all medium-sized trees <br /> shall be planted a minimum of thirty-five (35) feet on <br /> center; and all small trees shall be planted a minimum of <br /> twenty-five (25) feet on center. <br /> f. All planting on unpaved streets without curbs must have <br /> the special permission of the Municipal Forester who shall <br /> determine the tree's location so it will not be injured or <br /> destroyed when the street is curbed and paved. <br /> 4 . METHODS OF PLANTING AND SUPPORT <br /> a. Most small deciduous trees may be moved bare-rooted <br /> unless otherwise indicated. Roots of bare-rooted trees <br /> should be protected against drying out. <br /> b. All coniferous trees shall be moved balled and burlapped. <br /> Balled roots should be prevented from drying out at the <br /> surface of the ball and protected against injurious freezing. <br /> C. Pits dug for planting of bare-root plants shall be a <br /> minimum of twelve (12) inches larger in diameter than the <br /> diameter of the root system so as to be of sufficient size to <br /> accommodate the roots without crowding. For balled trees, <br /> the pits shall be a minimum of twelve (12) inches larger in <br /> diameter than the diameter of the ball of soil to allow <br /> proper backfill. <br /> d. Plants shall be planted no deeper than previously grown, <br /> with due allowance for settling. <br /> e. In poorly drained soil, artificial drainage shall be <br /> provided to properly drain the soil about the plant roots or <br /> tolerant species selected. <br /> f. Existing, indigenous soils shall be placed about the <br /> roots or in the back-fill around the ball. <br /> g. Postponed until the following growing season. <br /> h. Trees shall be suitable wrapped and guyed, or supported <br /> in an upright position, according to accepted arboricultural <br /> practices. The guys or supports shall be fastened so they <br /> hey will not girdle or cause serious injury to the tree or <br /> endanger public safety. <br /> 'D. Early Maintenance <br /> 1. General <br /> a. Newly planted trees require special attention to <br /> maintenance practices during one or two growing seasons <br /> following planting. All maintenance practices shall follow <br /> approved aboricultural standards. <br /> 2 . Watering <br /> a. Ample soil moisture shall be maintained following <br /> planting. A thorough watering each five (5) to ten (10) <br /> days, depending on soil type and drainage provisions, is <br /> usually adequate during the growing season. A soil auger or <br /> sampling tube is used to check the adequacy of moisture in <br /> the soil ball and/or backfill. <br /> 3 . Fertilization <br /> a. Provision of good drainage and adequate moisture of the <br />