Sustainable Christmas Tree and Nursery Production

Date: January 31, 2018 - February 28, 2018
Time: 12:30 - 2 p.m.
Location: Webinar
Contact: Jill O’Donnell, 231-779-9480,; Heidi Lindberg, 616-994-4701,

Michigan State University Extension will be offering five live webinars on ornamental nursery and Christmas tree production topics. The 90-minute webinars will be live 12:30 – 2 p.m. EST on Wednesday, Jan. 31, 2018 and all Wednesdays in Feb 2018 (February 7, 14, 21, 28). 

For those interested in the webinar series, but have previously existing conflicts, all webinars will be recorded and posted for viewing later.

This series will enable you to more effectively manage insects, diseases, nematodes on field-grown nursery crops and Christmas trees.

Cost: $40 for the webinar series or $15 per session.

Certification credits: Two pesticide recertification credits will be offered per webinar for participants from Michigan. For pesticide recertification credits for Michigan applicators who are viewing the recorded webinar will need to do so by April 1st. Each recorded webinar includes a survey before and after the webinar that must be completed. These surveys are initiated automatically when you click on the webinar title.

Participants desiring certification credits will need to provide their certification ID numbers during registration and submit a post-webinar evaluation in order to redeem their credits. For those of you that are requesting credits of any kind, you will need to watch the webinar in its entirety. We are able to track your attendance.

Webinar Topics




January 31

IPM and Insects

This session will cover the modes of action and performance attributes of insecticides commonly seed in Christmas tree production, improving efficacy of pesticide applications, using “softer” insecticides in insect management program, and ways to protect pollinators.

Erin Lizotte, MSU Extension

Heidi Lindberg, MSU Extension

Chal Landgren, Oregon State University

February 7

Trouble shooting nutrient problems

Nutrient management is critical to maintaining tree growth and quality. This session will focus on understanding soil factors that affect nutrient availability and nutrient use by conifers/plants.  We will also discuss how to maximize benefits of fertilizer and keep nutrients in the root zone. Techniques for trouble shooting nutrient problems – visible symptoms understanding soil and foliar tests, and remedial measures.

Dr. Bert Cregg, MSU Extension

Chal Landgren, Oregon State University

February 14

Soil Borne Disease and Nematode Management

Soil borne diseases can be a limiting factor in Christmas tree production and can be difficult to control.  Dr. Chastagner will review the various pathogens involved and discuss strategies to manage them. In addition, we will discuss nematodes that can attack the roots, stem, and foliage of plants.


Dr. Gary Chastagner,

Washington State University

Dr. Marisol Quintanilla,

MSU Extension

February 21

Weed Management

Weed control is an important cultural practice in field grown nursery crop and Christmas tree production. In this presentation Dr. Neal will discuss strategies for cost-effective weed management, selecting appropriate herbicides and timing of applications to obtain maximum weed control and avoid tree injury, and management options for herbicide resistant weeds.

Dr. Joe Neal, North Carolina State University 

February 28

Abiotic Issues and Deer Management

Why are my trees dropping needles, the foliage is turning brown or just suddenly died? Dr. Cregg will discuss the most common causes of injury or dieback in conifers that are not due to diseases, insects, and that are often hard to diagnose.  Deer and other vertebrates will feed on buds, stems, and small branches of Christmas trees. Jeff will review his research on deer repellents.

Dr. Bert Cregg, MSU Extension

Dr. Jeff Owens, North Carolina State University


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