Section 290-RICR-30-00-3.7 - Plant MaterialA. Plant materials indicated on the plans shall specify the botanical name of the plant materials used, the size at the time of planting, and the spacing between plants. All plant material shall be predominately evergreen and approved by the Department.B. The requirements for grading, ball size, etc. for specific nursery stock used should be in accordance with the American Nurserymen's Association's "American Standard for Nursery Stock," incorporated above at § 1.4(A) of this Part.C. Scientific and common names of plants shall be in conformity with the approved names in "Standardized Plant Names" prepared by the American Joint Committee on Horticultural Nomenclature, incorporated above at § 1.4(B) of this Part.D. Certificates of inspection of plant materials required by federal, state or other authority including any Rhode Island Department of Environmental Management licenses shall be procured prior to planting.E. The minimum size of plant material at the time of planting shall be as follows: 1. Shade trees: 1" - 1 1/2" caliper (Decidious)2. Multi-stem trees: 4' - 5' in height (Hawthorn, crape myrtle, etc.) Evergreen trees: 4' - 5' in height (Pinus, magnolia, etc.)3. Evergreen shrubs: 2 1/2' - 3' in height (including eleagnus, abelia, etc.)F. Planting plans shall show plant pit size, back fill material used, planting and staking details.290 R.I. Code R. 290-RICR-30-00-3.7