9.6 Irrigation System Maintenance

   A.   Irrigation systems must be maintained and replaced as necessary to continue to conserve water. Detection and repair of leaky or broken pipes, valves, and fittings and malfunctioning and/or misaligned heads, emitters, and bubblers must be part of a regular maintenance program for the site .

   B.   Automatic irrigation controllers are recommended to be reset a minimum of four times a year (spring, summer, fall, and winter) to adjust for plant water requirements that vary according to the season.

   C.   Whenever possible, repair of irrigation equipment must be done with the originally specified materials or their equivalent.

5-01.10.0 FIGURES

   Figure 5-A:   Vehicle Use Area

   Figure 5-B:   Vehicle Use Area

   Figure 5-C:   Plant Size, Location, and Spacing

   Figure 5-D:   Conflicts with Utilities and Solar Access

   Figure 5-E:   Pedestrian Safety Zone

   Figure 5-F:   Security Plant Materials

   Figure 5-G:   Screening Standards

   Figure 5-H:   Screening Standards - Variation for Walls

   Figure 5-I:   Safety Standards

Figure 5-A: Vehicle Use Area

Figure 5-B: Vehicle Use Area

Figure 5-C: Plant Size, Location, and Spacing

Adjust the locations of trees in the border to allow access to existing solar collectors and prevent conflicts with utility wires or easements.

Figure 5-D: Plant Size, Location, and Spacing

Figure 5-E: Pedestrian Safety Zone

Security Plant Materials

Botanical Name

Common Name

Evergreen

Deciduous

Barrier

Hedge

Thorns

Stickers

Dense

Height at Maturity

Tree

Shrub

Ground Cover

Perennial

Acacia species

•

•

•

•

Varies

•

•

Agave - many species

•

•

•

Varies

•

Aloe barbadensis

Aloe Vera

•

•

•

2'

•

Aloe saponaria

African Aloe

•

•

•

12"

•

Araucaria bidwillii

Bunya-Bunya Tree

•

•

•

80'

•

Asparagus falcatus

Sickle Thorn Asparagus

•

•

12"

•

•

Atriplex lentiformis

Saltbush

•

•

•

•

8'

•

Bambusa - many species

Bamboo

•

•

•

10'-15'

•

Bougainvillea ‘Barbara Karst’

•

•

8'-10'

•

Bougainvillea - Bush Var.

Bush Bougainvillea

•

•

3'-4'

•

Caesalpinia pulcherrima

Red Bird of Paradise

•

•

•

6'

•

•

Carissa grandiflora

Natal Plum - Many Var.

•

•

•

•

2'-6'

•

Celtis pallida

Spiny Hackberry

•

•

•

•

8'-10'

•

•

Chamaerops humilis

Med. Fan Palm

•

•

•

•

6'-10'

•

Cortaderia selloana

Pampas Grass

•

•

•

10'

•

Cotoneaster pannosus

Silverleaf Cotoneaster

•

•

6'-10'

•

Dasylirion wheeleri

Sotol

•

•

•

5'

•

Euphorbia mili

Crown of Thorns

•

•

•

7'-8'

•

Feijoa sellowiana

Pineapple Guava

•

•

•

6'-15'

•

Ferocactus species

Barrel Cactus

•

•

2'

•

Fouquieria splendens

Ocotillo

•

•

•

12'

•

Ilex cornuta ‘Burfordii’

Burford’s Holly

•

•

•

•

6'

•

Jasminum mesnyi

Primrose Jasmine

•

•

•

6'-8'

•

Juniperus species

Juniper

•

•

•

•

Varies

•

Leucophyllum frutescens

Texas Ranger

•

•

•

6'-8'

•

Ligustrum UDCidum

Privet

•

•

•

10'-30'

•

•

Mahonia aquifolium

Oregon Grape

•

•

•

•

6'

•

Nerium oleander

Oleander

•

•

•

10'-15'

•

Opuntia species

Prickly Pear; Cholla

•

•

•

Varies

•

Photinia fraseri

Photinia

•

•

10'

•

Pithecellobium flexicaule

Texas Ebony

•

•

•

20'

•

•

Punica granatum

Pomegranate

•

•

12'-20'

•

•

Pyracantha ‘Rosedale’

Firethorn

•

•

•

8'-10'

•

Pyracantha ‘Santa Cruz’

Firethorn

•

•

•

2'-3'

•

Rosa

Rose

•

•

•

Varies

•

•

Rosa banksiae

Lady Bank’s Rose

•

•

•

•

Varies

•

Tamarix aphylla

Tamarisk

•

•

•

10'-30'

•

•

Vauquelinia californica

Arizona Rosewood

•

•

•

8'

•

Viburnum suspensum

Viburnum

•

•

6'-8'

•

Xylosma congestum

Xylosma

•

•

•

8'-15'

•

•

Yucca aloifolia

Spanish Bayonnet

•

•

•

5'-7'

•

Yucca brevifolia

Joshua Tree

•

•

•

15'

•

Yucca whipplei

Our Lord’s Candle

•

•

•

2'-4'

•

 

Figure 5-F: Security Plant Materials

Figure 5-G: Screening Standards

Figure 5-H: Screening Standards - Variations for Walls

Figure 5-I: Safety Standards

SECTION 5-02.0.0: LANDSCAPE PLANT MATERIALS

Section

5-02.1.0   Purpose

5-02.2.0   Applicability

5-02.3.0   Types of Plant Material

5-02.4.0   Seeding Programs

5-02.5.0   Plant/Seed Lists

5-02.6.0   Exhibit

5-02.1.0 PURPOSE

   This standard has been prepared for the purpose of establishing plant and seed lists for use with various City of Tucson regulations that either require or regulate landscaping.

5-02.2.0 APPLICABILITY

   This standard applies on development projects, including repair and infrastructure installation, when city regulations mandate the use of drought tolerant or native plant and seed material.