Some homeowners make the mistake of landscaping with plants, and shrubs that are not natural to their region of the country. People have been misinformed about insect damage, for instance. A landscaper in Denver actually likes to use plants that grow naturally in an area, because they provide homes for the birds that are predators of the insect life that is indigenous to the same area.
A landscaper in Denver will point out that one of the most appealing aspects of landscaping with native trees, flowers, and greenery is the low maintenance required for it.