The plant-family garden is primarily an educational garden with 500 plant species from 50 selected families that span the diversity of flowering plants. The beds are designed based on the relationships between families according to Cronquist's system. Even though recent studies have overturned some of this system, the arrangement makes it particularly easy to compare plants.

The loosely curved paths are also the boundaries of Cronquist's subclasses. Information boards provide detailed information about the systematics, morphology and distribution of plant families.