Dubuque Arboretum and Botanical Gardens

Dubuque Arboretum and Botanical Gardens is the only arboretum and botanical garden in the USA staffed entirely by volunteers. Over 300 dedicated individuals maintain the trees, plants and shrubs, and seed-gifts which are all labeled throughout the garden. The Gardens include what is claimed to be the largest public hosta garden in the United States (13,000 plants representing over 700 varieties), as well as Annual and Perennial Gardens, several Children's gardens, an English Knot garden and Formal English Garden, Herb Garden, Cactus Garden, Iowa State and All American Test Gardens, Japanese garden designed by Hoichi Kurisu, and Rose Gardens. Also notable are the collections of unusual conifers and dwarf conifers.