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A stand of vegetation shall be considered established when:
A minimum of one perennial seeded species per square foot has rooted, developed true leaves, and is in a state of continual positive growth, and the interspace area between perennial species has a minimum of one annual or perennial plant in any stage of development or growth other than seed.
A. Exhibit I, Native Seed List, was derived from the Low Water Use/Drought Tolerant Plant List as known native vegetation. The list is not inclusive of all native vegetation. For alternative selections, refer to Section 5-02.3.2, Native Seeds.
The seed list is established as a guide on how to mix the various types of seeds to provide a varying mix of native plant growth on the
giving it a more natural appearance. The pounds per acre listing is a guide for use by the designer to achieve a minimum growth pattern to the seeded area. Specific rates are based on the seeds that are used in the mix. The seed mix is to be certified by the seed supplier as to the growth coverage projected.
B. The ADWR Low Water Use/Drought Tolerant Plant List is prepared for use within the Tucson Active Management Area (TAMA) by the ADWR.
In order to use plants not listed in ADWR Low Water Use/Drought Tolerant Plant List, the plants are to be approved through the following process.
A. Any person seeking to add or delete a plant or plants from the low water use plant list may submit an application for modification of the list at any time to the Director of the ADWR. The application is made on a form prescribed and furnished by the Director of the ADWR.
B. The ADWR Director reviews each request for modification of the low water use plant list. The Director may request additional information from the applicant and may seek information from other sources as may be necessary to determine whether the list should be modified.
C. If the addition of a plant to the low water use plant list is approved, the ADWR Director will place the plant on a supplemental list as an addendum to the low water use plant list. The supplemental list shall be available upon request from the ADWR.
D. If the ADWR Director approves the deletion of a plant from the Low Water Use/Drought Tolerant Plant List, the deletion from the list will be issued with the annual modified review plant list.
E. The ADWR Director conducts an annual review of the low water use plant list and issues a modified plant list. As a result of the review, the Director may add or delete plants from the list.
The plant and seed lists will be updated as necessary to provide the most current plant list based on Section 5-02.5.2.E.
Exhibit I - Native Seed List
EXHIBIT I: NATIVE SEED LIST
SPECIES | ||
Botanical Name | Common Name | PLS* Rate lbs/acre |
Aristida purpurea (P, W) | Purple Three-Awn | 2.0 |
Plantago insularis (A, C) | Indian Wheat | 3.0 |
Senna covesii (P, W) | Desert Senna | 2.0 |
Sphaeralcea ambigua (P, C/W) | Desert Globe-Mallow | 1.0 |
Sporobolus cryptandrus (P, W) | Sand Dropseed | 1.0 |
Plus choose a minimum of three (3) species from the following six: | ||
Acacia constricta (P, W) | Whitethorn Acacia, Mescat | 2.0 |
Ambrosia (Franseria) deltoidea (P, C) | Triangle-Leaf Bursage | 4.0 |
Atriplex canescens (P, C) | Four-Wing Saltbush | 3.0 |
Encelia farinosa (P, C/W) | Brittlebush | 1.5 |
Haplopappus (Ericameria) laricifolius (P, C/W) | Turpentine Bush | 1.0 |
Larrea tridentata (divaricata) (P, W) | Creosote Bush, Greasewood | 6.0 |
Optional recommended species: | ||
Acacia greggii (P, W) | Cat’s Claw Acacia | 2.0-3.0 |
Atriplex lentiformis (P, C) | Quail Bush | 1.0-2.0 |
Atriplex polycarpa (P, C) | Desert Saltbush | 1.0-3.0 |
Baileya multiradiata (P, C/W) | Desert Marigold | 1.0-2.0 |
Bouteloua curtipendula (P, W) | Sideoats Grama | 2.0 |
Parkinsonia floridum (P, W) | Blue Palo Verde | 2.0-3.0 |
Parkinsonia microphyllum (P, W) | Littleleaf or Foothill Palo Verde | 2.0-3.0 |
Eragrostis intermedia (P, W) | Plains Lovegrass | 1.0 |
Eschscholtzia mexicana (A, C) | Mexican Gold Poppy | 1.0-3.0 |
Leptochloa dubia (P, W) | Green Sprangle-Top | 1.0 |
Phacelia campanularia (A, C) | Desert Canterbury Bells | 1.0-2.0 |
Prosopis velutina (P, W) | Velvet Mesquite | 1.0-2.0 |
Psilostrophe cooperi (P, C/W) | Paper Flower | 1.0-2.0 |
Setaria macrostachya (P, W) | Plains Bristle Grass | 2.0 |
*PLS = Pure Live Seed | ||
KEY: A = Annual; P = Perennial; C = Germinates and thrives in the cool season; W = Germinates and thrives in the warm season; C/W = Germinates and thrives in cool/warm seasons. | ||
NOTE: The cool season in Tucson runs September through March, and the warm season is from March through October. There is an overlap of seasons. | ||
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