Plants can be grouped together because of their botanical relationship to each other, appearance, or historical relationship to humans or each other. Collections based on botanical relationships might include only plants from one family, like Camellias or Maples. Collections based on appearance might include only plants with white flowers or fragrant flowers. An example of a collection based on history is a primitive plant garden. Plant collections should have a definable purpose, which is usually educational or recreational and many times both. Plant collections are an important component of any arboretum and contribute to establishing an arboretum's identity.
The Camellia Garden, located in front of Jenkins Hall on the Armstrong campus, was established to test the landscape potential of camellia species grown along the Georgia coast.
The Conifer Garden, located on the east side of Burnett Hall on the Armstrong campus, contains over 140 different conifers representing 24 genera.
The Fern Garden, located in front of Jenkins Hall on the Armstrong campus, displays both native and non-native ferns and their allies.
The Ginger Garden, located on the Armstrong campus at the south end of Hawes Hall, contains plants belonging exclusively to the Zingiberaceae family.
The International Garden in the Armstrong Arboretum celebrates the diversity of the university community by displaying plants from around the world.
The Primitive Garden, located next to Jenkins Hall on the Armstrong State University campus, presents a walk through time by displaying living relatives of ancient plants.
The arboretum also features several smaller collections of plants from the following families: Dogwood, Evergreen, Magnolia, Maple, Pittosporum.