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Doña Ana County, NM Tree Protection: Parkway Planting (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Minimum tree size
24-inch box or 1.5-inch caliper or 6 ft
Canopy width required
2 feet at installation
Spacing rule
No closer than mature canopy width
Turf
Prohibited in parkway strip
Planting area
36 sq ft minimum, unpaved
Hydrant clearance
8 feet minimum
Governing section
UDC § 350-507F, Landscape public right-of-way

Summary

Street trees planted in Doña Ana County's public rights-of-way must measure at least a 24-inch box, 1½-inch caliper, or 6 feet tall with a 2-foot canopy at installation, and cannot be spaced closer than their mature canopy width. Turf is banned in the parkway strip, and every tree needs a clear planting area under the Unified Development Code's landscaping standards.

These county ordinances apply to unincorporated areas of Doña Ana County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

Trees in parkways shall have a size combination of no less than twenty-four-inch box, 1 1/2 inch caliper, or six-foot height with a two-foot canopy width at installation time. Trees shall not be spaced closer than their mature canopy widths. They may use even or uneven groupings and spacing. Turf, regardless of irrigation method, is prohibited in this area.

Full Breakdown

The county's Unified Development Code addresses street trees under § 350-507, Landscaping, buffering, and fencing, Subsection F, Landscape, public right-of-way, which applies to the parkway, the planted strip between the sidewalk and the curb described in § 350-403E, Parkway assemblies. Trees planted in a parkway must be installed at a minimum size combination of a 24-inch box, 1½-inch caliper, or 6-foot height with a 2-foot canopy width, and they cannot be spaced closer together than their canopy width at maturity, though the code allows even or uneven groupings.

Turf grass is prohibited in this right-of-way strip regardless of irrigation method. The broader landscaping section, § 350-507E, sets clearances that apply to any street tree: an unpaved planting area of at least 36 square feet with no dimension under 4 feet is required per tree, trunks need 6 feet of clearance from buildings, fences, walls and parkways, canopies must stay clear of overhead utility lines unless the species matures under 12 feet, trunks must sit at least 3 feet from underground utilities and 10 feet from streetlight poles, and 8 feet from fire hydrants.

10, Typical Rural Parkways, referenced in § 350-403E. In the county's highest-intensity T5 areas with shopfronts, sidewalk pavement may substitute for the required public planting.

Violations & Fines

Landscape and parkway plans are reviewed by the Development Review Committee and Zoning Administrator during subdivision or site plan approval; installed plantings that fail to meet the spacing, size or clearance standards can hold up final inspection or plat recording. Once adopted, violations of the Unified Development Code are punished under Chapter 1, § 1-20, General Penalty: up to a $300 fine, up to 90 days in jail, or both, with each day of noncompliance a separate offense.

Frequently Asked Questions

What size do parkway street trees have to be in Doña Ana County?
New trees planted in the county right-of-way parkway must meet a minimum size of a 24-inch box, 1½-inch caliper, or 6-foot height with a 2-foot canopy width at installation, per UDC § 350-507F(1). They also cannot be planted closer together than their canopy spread at maturity.
Can I plant turf grass in the parkway strip?
No. County code prohibits turf, regardless of irrigation method, in the landscape area of the public right-of-way under § 350-507F(2). Low plants, mulch, or seeded groundcover that meets the county's slope and coverage rules are the allowed alternatives instead.
How far must a parkway tree be from a fire hydrant or utility pole?
Trees must be at least 8 feet from a fire hydrant and their trunks at least 10 feet from a streetlight pole or fixture, with canopies kept clear of the pole itself, under § 350-507E(13). Trunks also need 3 feet of clearance from underground utility lines.

Sources & Official References

Other rules in Doña Ana County

All Doña Ana County rules

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