Bert Cregg

The Garden Professors July 15, 2014 Print Friendly and PDF

photo of Dr. Bert Cregg

Dr. Bert Cregg is an Associate Professor and Extension Specialist for landscape, nursery, and Christmas tree production at Michigan State University. His expertise includes stress physiology, plant nutrition, and plant response to environmental stresses.  He develops extension and education programs for key commodity groups including the Michigan Nursery and Landscape Association, the Michigan Christmas Tree Association, the Arboriculture Society of Michigan, the Michigan Green Industry Association, and the Michigan Seedling Growers Association.  Dr. Cregg writes frequently on landscape and nursery topics regular and is regular contributor the MSU Extension News, the Michigan Landscape magazine, and the Great Lake Christmas tree journal.  Prior to joining the MSU faculty in 1999, Dr. Cregg was a Tree Physiology Project Leader for International Paper and a Research Plant Physiologist of the USDA Forest Service.  He earned his Ph.D. in Forest Resources at the University of Georgia and holds a Master of Science in Forestry from Oklahoma State University and Bachelor’s of Science in forest Management from Washington State University.

Connect with us

  • Facebook


This is where you can find research-based information from America's land-grant universities enabled by



The Garden Professors BLOG: Science-based gardening information

Group of People icon
Join The Garden Professors BLOG Group Page on Facebook for lively in depth discussions on research-based gardening information

Facebook logo
Four university professors dedicated to translating scientific information for your gardens and landscapes. Be informed and entertained!


Additional Resources:
Extension Master Gardener


Icon made by OCHA from 


Ask an Expert Trending Questions are general questions answered by a variety of individuals within the eXtension system, not The Garden Professors.  



This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.