Origin

Origin is useful shorthand and a bad rule. It is worth knowing where a plant comes from, and it is worth not treating that as the answer.

"Native to Colorado" is a very large claim. This state runs from high desert at four thousand feet to alpine tundra above eleven thousand, across soils that have nothing in common. A plant native to the eastern plains, or to a wet mountain meadow, or to the Front Range, may be entirely unsuited to a 5,500-foot valley with alkaline soil and eight inches of precipitation. The useful question is never "is it native" — it is native to what, at what elevation, in what ground.

Here are the three origins, and what each one tells you.

Introduced from outside the region. Plenty perform well here. Anything introduced gets checked against the Colorado noxious weed list before it goes on a plan.
Bred from two parents for a specific trait — disease resistance, hardiness, compact habit, alkaline tolerance. Often the more reliable choice where a straight species struggles here.
Occurs naturally in this region. Generally lower-input once established — though native to Colorado and native to a 5,500-foot valley with alkaline soil are not the same claim.

Where a plant is genuinely native to conditions like these, it is usually the low-input choice, and that is worth designing around. It has already solved the soil chemistry, it expects the precipitation, it is adapted to the swing between a 75-degree afternoon and a 35-degree night, and it supports the insects and birds that evolved alongside it.

Hybrids carry an undeserved reputation and are often the better performer here. A hybrid exists because somebody selected for something — disease resistance, a more compact habit, better cold tolerance, tolerance of alkaline soil. On a site that is genuinely difficult, a plant bred for the problem frequently beats a straight species that merely tolerates it.

Introduced plants get checked before they go on a plan. Plenty are excellent here and have been grown in this valley for a century. The check is against the Colorado noxious weed list, because a plant that thrives in this climate and also spreads on its own is not a feature — it is a removal job for somebody, and often for a neighbour downstream.

If a native or low-water planting is what you are after, say so at the start. It works considerably better as something that shapes the plan from the beginning than as a substitution exercise applied to a plan already drawn — and done properly it is one of the better-looking things we build.

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