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7.2.1.1 Dig a shallow, broad tree planting hole at least 1 -1/2 times <br /> the diameter of the root ball and to a depth that will allow the trunk flare to <br /> be level with existing ground. (See Appendix B.) <br /> 7.2.1.2 Score the edge of the hole to leave the edges rough and not <br /> smooth. This will encourage rooting into the existing native soil. <br /> 7.2.2 Bare -root stock: <br /> 7.2.2.1 Dig tree- planting holes 1 foot wider than the spread of the <br /> roots to allow the roots sufficient area. The hole shall have sufficient <br /> depth to allow the trunk flare to be level with the existing ground. (See <br /> Appendix B.) <br /> 7.2.2.2 Leave a mound in the center of the hole to drape and <br /> spread roots in their natural position over the mound. (See Appendix B.) <br /> 8. Planting General Conditions. <br /> 8.1 Balled and burlapped trees: <br /> 8.1.1 Trees shall have a sound ball that has not been allowed to dry out <br /> at any time. <br /> 8.1.2 The root ball shall be firmly attached to the trunk. <br /> 8.1.3 Except as provided in 8.1.5, only materials that are untreated and <br /> biodegradable may be left around root ball after planting. <br /> 8.1.4 When planting, the tie material must be removed and the burlap <br /> peeled back to expose soil on at least the top 1/3 of the root ball. <br /> 8.1.5 Wire baskets are to be cut off to a depth of at least 18 inches from <br /> the top of the root ball. <br /> 8.2 Container grown tree: <br /> 8.2.1 Remove the tree from the container and softly loosen root mass. <br /> 8.2.2 Inspect roots for a girdling or circling condition. If girdling or <br /> circling roots are present, the tree shall not be planted. <br /> 8.2.3 Trees shall have been grown in the container for a maximum of <br /> one year. <br /> 8.3 Bare root trees: <br /> Administrative Order - 8 <br />