Atop Halsey Science Center are over 3,000 square feet in nine temperature-controlled greenhouses, and a 400 square foot head house. They house a wide variety of plants, including an extensive collection of desert succulents, and other plants not native to Wisconsin including cycads, ferns, and orchids.  Several houses are set aside for research, including a variety of projects on plant/fungal interactions and plant response to environmental change.

Courses that regularly use the greenhouse facilities include: Biological Concepts: Unity (105), Biological Concepts: Diversity (106), Biology of Plants and Microbes (231), Field Ecology (325), Ecosystems Ecology (386), and Plant Physiology (345).