Our Sister Company: Christensen's Plant Center - Wholesale only nursery located in Plymouth, Michigan. Organizations: Michigan Nursery & Landscape Association Michigan Green Industry Association American Nursery & Landscape Association Perennial Plant Association Michigan Department of Agriculture Tree and Shrub Websites: Michigan State University Extension - Information available to homeowners and Industry Professional. Ohio State University OhioLine - General Information. Plantfacts - Detailed pictures and pronunciations of plants and their scientific names. All About Lawns - Answers questions about establishing and caring for lawns. Tree Help - Also sells arborist supplies for tree care. All American Rose Selections Shady Oaks - Hosta grower with a vast selection that have detailed pictures with descriptions. Botanical Gardens and Arboretums: A list of local gardens in Ohio and Michigan Stranahan Arboretum - Toledo, OH Hidden Lake Gardens - Tipton, MI - Featured dwarf conifer collection. Frederik Meijer Gardens & Sculpture Park - Grand Rapids, MI Longwood Gardens - Kennett Square, PA - One of the premier gardens in the country.