Thornton, CO Landscaping Rules: Native Plants (2026)
Summary
Thornton may encourage or require native and drought-tolerant landscaping. Some areas restrict traditional grass lawns in favor of water-efficient alternatives.
Bill Summary: Under current law, a unit owners' association (association) of a common interest community may not prohibit the use of xeriscape, nonvegetative turf grass, or drought-tolerant vegetative landscapes to provide ground covering to property for which a unit owner is responsible. There is, however, an exception authorizing an association to adopt and enforce design or aesthetic guidelines or rules that apply to nonvegetative turf grass and drought-tolerant vegetative landscapes or to regulate the type, number, and placement of drought-tolerant plantings and hardscapes that may be installed on a unit owner's property, on a limited common element, or on other property for which the unit owner is responsible.
Full Breakdown
Thornton increasingly supports native plant landscaping and xeriscaping for water conservation and habitat restoration. Some jurisdictions offer rebates for lawn replacement with drought-tolerant plants. HOAs in many states can no longer prohibit xeriscaping or native plant gardens. Municipal water restrictions may effectively require low-water landscaping for new developments. Native plant lists are typically available from local cooperative extension offices. Invasive species removal may be required or incentivized.
Frequently Asked Questions
Can my HOA force me to keep a grass lawn?
Are there rebates for replacing my lawn?
Sources & Official References
Other rules in Thornton
Compare Thornton to another location·View the Colorado landscaping rules overview
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Native Plants in Nearby Cities
How other cities in Adams County handle native plants.