Morrisville UDO Administrative Manual - May 2020

Part 4. Appendices 4.3 Plant Lists

4.3 PLANT LISTS The intention of these lists is to help developers comply with the UDO’s buffer and landscaping standards. They identify tree species selected for their hardiness, growth rate, ability to withstand adverse conditions, natural diversity and beauty, and general local availability.

4.3.1 General

The Tables 4.2.1.A and 4.2.1.B provide the definitions and key for Table 4.3.3.

Plant Characteristics + Conditions Definitions

Table 4.2.1.A: Definitions

Nuisance litter prone, can consist of blossoms, seeds, bark; best planted in natural or buffer areas away from foot traffic or hardscapes; excludes leaf fall for deciduous trees Less litter, straight trunk, tolerates urban pollution, can handle varying conditions - many trees can be street trees if given appropriate soil conditions and rooting space; only considering deciduous shade trees as street trees May be appropriate adjacent to overhead utility lines or easements due to the height and spread. Verification by Duke Energy Progress required for landscape plans with vegetation below utilities or within utility easements.

Litter

Street Tree Suitable

Utility Lines

Plant Characteristics + Conditions Key

Table 4.2.1.B: Key

Indicates a characteristic or feature is present

•



Full sun



Part sun

⚫

Full shade

¡

PARTICULARLY SUITED to dry conditions



TOLERATES moderate soil moisture



REQUIRES moderate to high soil moisture

4.3.2

Required Species Diversity

To provide for enhanced plant diversity on developed sites, a site's tree genus and species diversity shall follow the standards outlined in Table 4.3.2: Species Diversity. Any deviation from these diversity standards must be approved by the Planning Director. For healthy ecology and highest system survivability, the plant palette for a site must contain:

Table 4.3.2: Species Diversity

Number of New Trees

Max. % of Any One Genus

Max. % of Any One Species

1-20

50%

50%

21-40

30%

20%

41-60

20%

15%

60+

15%

15%

4.3.3

Recommended Trees and Shrubs

The charts on the following pages provide a list of permitted trees and shrubs that satisfy the requirements of the UDO.

Morrisville, NC

May 29, 2020

Administrative Manual

Page 4-7