Query:

See also: Cottonwood Open Space (City of Golden).

1.78 ac. public open space in Golden, between the high school, the golf course, Harmony Village and other developments.

Elevation: 0ft, 1759m.

Articles that refer to this location:

• Checklist Flora of Native and Naturalized Vascular Plants of Golden and Vicinity, Jefferson County, Colorado: Cottonwood Open Space; 
• Welch Ditch, Jefferson County, Colorado: near boundary; 
• Field Notes: 2 Jan 2025;  Coll. No. 3446, 7 Jul 2025; 

Area Plant Lists that contain this location:

• Area Plant List for Golden.

View to southeast from Welch Ditch across Cottonwood Natural Area.	View to the north across Cottonwood Natural Area.	View to the southeast, high school at left, surge pond in center, Lookout Mountain Youth Services at right.	Berries of a Lycium, either L. barbarum or L. chinense, in Kinney Run.	View to the south across the Cottonwood Natural Area.
Golden High School as seen from the end of the social trail through Cottonwood Natural Area.	Composite photo of Cottonwood Open Space in December 2024.	Coll. No. 3446, Solanum dulcamara.

Species collected at or near this location.

This list summarizes plants collected or observed at this specific, named location. It does not include plants collected or observed at nearby named or unnamed locations. It may be more instructive to use the Area Lists that contain this location.

• TAS – The plant was collected by Tom Schweich.
• Oth – The plant was collected by someone, but not Tom.
• Obs – The plant was observed, but not collected.

Apiaceae

Smyrnieae

Conium maculatum L. Common Poison Hemlock (Obs)

Asclepiadaceae

Asclepias speciosa Torr. Showy Milkweed (Obs)

Asteraceae

Astereae

Chrysopsidinae

Heterotheca villosa (Pursh) Shinners. Hairy False Goldenaster (Obs)

Cardueae

Onopordinae

Onopordum acanthium L. Scotch Cottonthistle (Obs)

Eupatorieae

Brickellia eupatorioides (L.) Shinners. False Boneset (Obs)

Brassicaceae

Lepidium draba L. White Top, Hoary Cress (Obs)

Cactaceae

Opuntia macrorhiza Engelm. Western Pricklypear (Obs)

Rosaceae

Amygdaloideae

Maleae

Crataegus. Hawthorn (Obs)

Salicaceae

Populus deltoides Marshall monilifera (Aiton) Eckenw. Plains Cottonwood (Obs)

Salix exigua Nutt. Coyote Willow, Narrow-Leaved Willow (Obs)

Scrophulariaceae

Verbascum thapsus L. Common Mullein (Obs)

Asparagaceae

Agavoideae

Agaveae

Yucca glauca Nutt. Soapweed Yucca (Obs)

Poaceae

Andropogoneae

Sorghastrum nutans (L.) Nash. Yellow Indian Grass (Obs)

Bromeae

Bromus inermis Leyss. Smooth Brome (Obs)

Poeae

Festuca ovina L. Complex, hybrid or selection (Obs)

Triticeae

Agropyron cristatum (L.) Gaertn. Crested Wheat Grass (Obs)

A, B, C, D, E, F, G, H, I, J, K, L, M,
N, O, P, Q, R, S, T, U, V, W, X, Y, Z

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Date and time this article was prepared:8:01:13 PM, 4/4/2026.