Page 216 - Des Moines - Zoning, Planning and Design Ch 134, 135
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135-5. lANDScAPe AND StreetScAPe DRAFT
General Landscape Installation Requirements
135-5.2 General landscape installation 1. For temporary certificates of occupancy issued
requirements between October 1 and April 30, all remaining
landscape required shall be installed by the
5.2.1 iNteNt following June 1.
The following provisions aid in ensuring that all required 2. For temporary certificates of occupancy issued
landscaping is installed and maintained properly. between May 1 and September 30, all remaining
5.2.2 APPlicABilitY landscape required shall be installed by the
These provisions apply to landscape installation as following October 30.
required by this section. c. tree Measurement.
5.2.3 GeNerAl iNStAllAtiON reQUireMeNtS 1. Caliper is the measured diameter (inches) of the
The installation of landscaping shall adhere to the tree trunk as follows:
following standards. a. 4 inch caliper and smaller. Caliper
A. National Standards. Best management practices measurement of the trunk shall be taken 6
inches above the trunk/root flare up to and
and procedures according to the nationally accepted including 4 inch caliper size.
standards shall be practiced. All landscaping and
trees shall be installed in conformance with the b. Greater than 4 inch caliper. If the caliper
practices and procedures established by the most at 6 inches above the ground exceeds 4
recent edition of the American Standard for Nursery inches, the caliper shall be measured at 12
Stock (ANSI Z60.1) as published by the American inches above the trunk/root flare.
Association of Nurserymen. 2. For trees measured in height only, the
B. installation. Landscaping shall be fully installed measurement shall be taken from the root flare
prior to the issuance of a certificate of occupancy. to the tip of foliage.
If seasonal conditions preclude the complete D. Plant Size requirements. Plant material shall be
installation, a temporary certificate of occupancy sized according to Table 5.2-1 unless otherwise
may be issued as follows: noted in this section.
e. condition and Selection of Planting Materials.
Table 5.2-1. PlANt MAteriAl SiZe At The plant materials used shall be free from visible
iNStAllAtiON signs of disease, infestation, or physical defect at the
time of planting. Plant materials shall:
Plant Material Type Minimum Size
1. Be appropriate for the conditions of the location,
1.5 inch caliper and 8 feet in
Street Tree height including sun and wind exposure, air quality, salt
Shade/Overstory Tree 1.5 inch caliper and 8 feet in exposure, soil type, expected moisture content
of soil, and slope.
height
Ornamental/understory 1.5 inch caliper and 6 feet in 2. Not be an invasive or a potentially invasive
Tree height
species.
Evergreen/Coniferous Tree 6 feet in height
3. Be, wherever possible, native or naturalized to
3 gallon container or 15-18 inch the Des Moines region.
Shrubs - Deciduous balled & burlapped; and 18-24
inches high x 15-18 inches wide F. compost and Organic Matter. Compost and
3 gallon container or 15-18 inch organic matter shall be utilized within the soil mix to
Shrubs - Evergreen balled & burlapped; and 18-24 reduce the need for fertilizers and increase water
inches high x 15-18 inches wide
3 gallon container or 15-18 inch retention.
Ornamental Grasses balled & burlapped; and 18-24 G. establishment. All installed plant material shall be
inches high x 15-18 inches wide fully maintained until established, including watering,
Groundcover 1 gallon container and 3 inches mulching, fertilizing, and replacement as necessary.
high by 12 inches wide
135-5-4 DRAFT AuGuST 3, 2017
