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The greenhouse is a 9,625 square foot hidden gem located on the roof of the NWQ Building Complex. The state-of-the-art facility maximizes research capability and provides an open, flexible environment for botanical instruction, supporting both undergraduate and graduate education and cutting-edge NSF funded research.

The facility is divided into 3 wings, with 18 separate rooms and includes an expanded head house utilized as both a potting area and a classroom, modern wet lab space, a vibration lab, 4 instructional houses, 1 propagation house, 6 research houses, a cold room, an office and student lounge, and greenhouse support spaces, with an additional 1,200 square feet of outdoor planting beds available for research and instruction.

The diverse instructional plant collection comprises approximately 672 species representing over 100 plant families, showcasing a range of plant biodiversity, evolution and adaptation, with specimens representing lower vascular plant lineages, to cycads, to a strong representation of flowering plants. The greenhouse maintains a collection of native plants which is supplemented by 270 tree and shrub species planted throughout the campus. An 11-acre conservancy area on campus is also available for study. Lapham Hall houses 17 plant growth, insect, environmental or cold chambers for research and instructional use.

For questions or to visit, please contact Greenhouse Manager Paul Engevold at 414-229-4248, or via email (preferred) at

Greenhouse Policy & Procedures

Greenhouse Chemical Hygiene Plan

The Biological Sciences Greenhouse facility houses both long-term research, supporting the work of faculty members, and short-term projects for undergraduate and graduate student research.

Recent research publications include:

Christopher, D. A., Mitchell, R. J., Trapnell, D. W., Smallwood, P. A., Semski, W. R. and J. D. Karron. 2020. Edge effects and mating patterns in a bumblebee-pollinated plant. AoB Plants 12(4): 1-7.

Byers, H. L., McHenry, L. J., & Grundl, T. J. (2020). Increased risk for lead exposure in children through consumption of produce grown in urban soils. Science of The Total Environment 743: 1-12.

Speck, B., Seidita, S., Belo, S., Johnson, S., Conley, C., Desjonquères, C., and Rodríguez, R.L. Combinatorial signal processing in an insect. The American Naturalist 196(4): 406-413.

Desjonquères, C., Holt, R. R., Speck, B., and Rodríguez, R.L. The Relationship between a combinatorial processing rule and a continuous mate preference function in an insect. Proceedings of the Royal Society B 287(1935): 1-10.

Christopher, D. A., Mitchell, R. J., Trapnell, D. W., Smallwood, P. A., Semski, W. R. and J. D. Karron. 2019. Hermaphroditism promotes mate diversity in flowering plants. American Journal of Botany 106(8): 1131–1136.

Byers, H. L., McHenry, L. J., & Grundl, T. J. (2019). XRF techniques to quantify heavy metals in vegetables at low detection limits. Food Chemistry: X, 1, 100001.

Desjonqueres, C., Maliszewski, J., Lewandowski, E. N., Speck, B., & Rodriguez, R. L. (2019). Social ontogeny in the communication system of an insect. Animal Behaviour 148: 93-103.

Smith, A. R.  Dissection of floral organ development and sterility in Sorghum bicolor. PhD Dissertation, University of Wisconsin – Milwaukee, Milwaukee, WI., 2019.

Rodriguez, R. L., Wojcinski, J. E., & Maliszewski, J. (2018). Between-group variation in Echenopa treehopper juvenile signaling (Hemiptera Membracidae). Ethology Ecology & Evolution 30(3): 245-255.

Wefferling, K. W. Disentangling the subalpine marshmarigold species complex: the cytogeography, phylogeography, and the systematics of Caltha biflora DC., C. chionophila Greene, and C. leptosepala DC. (Ranunculaceae). PhD Dissertation, University of Wisconsin – Milwaukee, Milwaukee, WI., 2018.

Young, E. B., Sielicki, J., & Grothjan, J. J. (2018). Regulation of hydrolytic enzyme activity in aquatic microbial communities hosted by carnivorous pitcher plants. Microbial Ecology (76)4: 885-898.

Zhao, C. Z., Huang, J., Gyaneshwar, P., & Zhao, D. (2018). Rhizobium sp. IRBG74 alters Arabidopsis root development by affecting auxin signaling. Frontiers in Microbiology 8: 2556.

Fowler-Finn, K. D., Cruz DC & Rodríguez RL. 2017. Local population density and group composition influence signal-preference relationships in Enchenopa treehoppers (Hemiptera: Membracidae). Journal of Evolutionary Biology 30, 13-25.

Fowler-Finn, K. D., Kilmer, J. T., Cruz, D. C., & Rodriguez, R. L. (2017). Female mate choice of male signals is unlikely to promote ecological adaptation in Echenopa treehoppers (Hemiptera Membracidae). Ecology and Evolution 8: 2146-2159.

Hallett, A. C., Mitchell, R. J., Chamberlain, E. R., & Karron, J. D. (2017). Pollination success following loss of a frequent pollinator: the role of compensatory visitation by other effective pollinators. AoB Plants 9(3): plx020.

Wefferling, K. W., Castro, S., Loureiro, J., Castro, M., Tavares, D., & Hoot, S. B. (2017). Cytogeography of the subalpine marsh marigold polyploid complex (Caltha leptosepala s.l., Ranunculaceae). American Journal of Botany 104(2): 271-285.

Xin, Z., Huang, J., Smith, A. R., Chen, J., Burke, J., Sattler, S. E., & Zhao, D (2017). Morphological characterization of a new and easily recognizable nuclear male sterile mutant of sorghum (Sorghum bicolor). PLoS ONE 12(1): e0165195.