Weed Management in nursery crops, landscape plantings and Christmas trees. Research and extension programs focus on optimizing weed control programs for cost-effective weed control and environmental stewardship, and biological control of weeds.

Dr. Whipker's primary responsibilities are to conduct relevant research and extension activities on commercial floriculture crops in North Carolina. He has statewide Extension responsibilities in commercial floriculture production with an emphasis on plant nutrition, plant growth regulators and crop problem diagnsotics.