Denver
Botanic Gardens
This
top-ranking botanical garden in the United States offers a
wide range plants from around the world. The garden is spread
over 4 different sites in the Denver area. Tours led by volunteer
guides cover these sites respectively featuring fragrant blooms,
wildlife and native and one with an interpretive theme.
Visit
their website for operational times and admission fees.
Western
Colorado Botanical Gardens & Butterfly House
Grand
Junction facility featuring sensory, native, cactus, and xeric
gardens, a children's secret garden, as well as greenhouses
showcasing orchids and butterflies.
Visit
website for visiting hours and admission rates.