• Great Kiva with Walls of West Ruin

    Aztec Ruins

    National Monument New Mexico

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  • Museum Closed Starting October 27, 2014

    The Aztec Ruins museum will be closed starting Monday, October 27, 2014 to prepare for new exhibits to be installed in April 2015. The visitor center, video, and self-guided trail will remain open.


Plants of Aztec Ruins National Monument

As part of the National Park Service’s Natural Resources Initiative, botanists conducted plant inventories during 2001 and 2002 in the park. Prior to these inventories, only partial plant lists had been compiled based on inventories of small areas within the park.

The early season inventory during 2001 documented 105 plant species, including 19 exotic species. Plant lists for late summer and the following year’s inventory have not yet been compiled, but documentation of more species is anticipated.

The archeological sites are characterized by a mixture of native riparian species and non-native species, with native and non-native trees making up a substantial portion of the vegetation. The riparian zone and Farmers Ditch have some additional native and non-native trees and shrubs. The irrigation ditch supports exotic species that require more water than is available in drier locations, but it also provides habitat for native riparian trees and herbaceous perennials. Where the arroyos or washes slope down to the ditch, riparian and semi-riparian species also occur, along with several exotic species. The slopes and uplands north of the main archeological sites support a rich plant community of native grasses, herbaceous perennials, annuals, cacti, and shrubs.

Non-native plant species are numerous and abundant in some areas, particularly along the irrigation ditch, and around the park headquarters, the large prehistoric structures, and the orchards and formerly cultivated fields. Tumble mustard occurs in many places. Hoary cress and Russian knapweed, noxious weeds that are very competitive with other species, occur in several areas of the park. Disturbance associated with previous agriculture—croplands, orchard, pastures—coupled with the disbursal of exotics via the irrigation ditches have contributed to the establishment of exotic species within the park.

No federal or state listed species of concern are present. Botanists have recorded eleven vegetation types, including pinon-juniper woodland, grasslands, and riparian vegetation.

A partial list of the vegetation found so far include the following:

Archeological Sites
Garden Asparagus*
Smooth Brome*
Orchard Grass
Hedgehog Cactus
New Mexico Olive
Tansy Mustard
Prickly Pear
Brittle Prickly Pear
Chinese Elm*
Fremont Cottonwood
Threadleaf Groundsel

Irrigation Ditch
Tall Fescue
Perennial Morning Glory*
Prairie Sunflower
Foxtail Barley
Yellow Sweet Clover*
Scarlet Globe Mallow
Virginia Creeper
Narrowleaf Cottonwood
Mock Orange
Upland Bench
Big Sage
Four Wing Salt Bush
Pincushion Cactus
Storksbill* Caniagre Dock
Threadleaf Groundsel
Needle Grass
Tumble Mustard*

Previously Cultivated Field
Tumble Mustard*
Tansy Mustard
Tall Fescue*

Black Sage, Big Sage
Golden Aster
Fourwing Saltbush
Hedgehog Cactus
Russian Olive*
Tall Fescue
New Mexico Olive
Fremont Cottonwood
Goodings Willow
Threadleaf Groundsel
Torrey Seepweed
Tamarisk, Saltcedar*
Chinese Elm*

(*indicates non-native species)

Did You Know?

Aerial view of Aztec West

President Warren G. Harding designated Aztec Ruins a national monument in 1923 in order to preserve the site "for the enlightenment and culture of the nation."