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Plant, Soil, and Environmental Sciences

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Faculty Directory - Stack

Dr. Lois Berg Stack

Area of Expertise:  Ornamental Horticulture


Phone:  207-581-2949

Office:  495 College Avenue

Bio:  I received M.S. (1980) and Ph.D. (1984) degrees from the University of Wisconsin-Madison.  I joined the faculty in 1987 and serve as UMaine’s Extension Specialist in Ornamental Horticulture and Professor of Sustainable Agriculture.

Teaching:  PSE100 Plant Science

Current Extension Program:  I develop educational programs for greenhouse, nursery, garden center and landscape professionals; advise green industry professional associations; and contribute to home gardening programs.

Ongoing projects include:
- Development of statewide programming about invasive plants, for industry members and the general public.
- Editorship of the biennial New England Greenhouse Floriculture Guide
- Collaborative planning of the biennial North East Greenhouse Conference
- Coordination of regional Cooperative Extension program at annual New England Grows trade show
- Collaboration on periodic economic impact surveys of New England’s green industry
- Development of topic-focused educational programs for Maine’s green industry


Current Teaching:

PSE100 Plant Science (4 credits; fall semester)

Research Area:  I conduct applied research that responds to production and management need of Maine’s ornamental horticulture industry. My current projects include assessment of Aronia melanocarpa production in New England and assessment of introduced and native plants as pollen/nectar sources for native bees and honeybees.

Recent Publications:

Coats, V.C., Stack, L.B., and Rumpho, M.E. (201x). Maine nursery and landscape industry perspectives on invasive plant issues. Invasive Plant Science and Management. (in press)

Hawkins, B., S.E. Burnett and L.B. Stack. (201x). Survey of consumer interest in organic, sustainable, and local container-grown plants in Maine. HortTechnology (in press)

Murphy, A., R. Austin, R. Bangs, G. Fish, R. Roberge and L.B. Stack. 2011. Maine Sustainable Landscape Certification Manual. Maine Landscape and Nursery Association.

Stack, L.B., ed. 2010. New England greenhouse floriculture guide: a management guide for insects, diseases, weeds and growth regulators 2011-2012. New England Floriculture, Inc.

Garland, K.F., S.E. Burnett, L.B. Stack and D. Zhang. 2010. Minimum daily light integral for growing high-quality coleus. HortTechnology 20:929-933.

Perry, L.P. and L.B. Stack. 2009. $4.7 billion & growing: a summary of the impact of the environmental horticulture industry on the New England economy.  New England Nursery Association, Inc.

Burnett, S.E. and L.B. Stack. 2009. Survey of the research needs of the potential organic ornamental bedding plant industry in Maine.  HortTechnology 19:743-747.

Stack, L.B., ed. 2008. New England greenhouse floriculture guide: a management guide for insects, diseases, weeds and growth regulators 2009-2010. New England Floriculture, Inc.

Burnett, S.E., D. Zhang, L.B. Stack and Z. He.  2008.  Effects of phosphorus on morphology and foliar nutrient concentrations of hydroponically grown Scaevola aemula R. Br. ‘Whirlwind Blue’.  HortScience 43(3):902-905.

Zhang, D., R. Zhang, J. Yu, L.B. Stack, B. Xie, and J.M. Ruter. 2008. Teaoil camellia — eastern “olive” for the world. Acta Horticulturae 769:43-48.


Image Description: LoisBergStack Fall2012

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Contact Information

Plant, Soil, and Environmental Sciences
5722 Deering Hall
Orono, Maine 04469-5722
Phone: (207) 581-2947 | Fax: (207) 581-2999
The University of Maine
Orono, Maine 04469
A Member of the University of Maine System