20 greenhouse disease resources just a click away


Controlling the spread of disease in the greenhouse is a concern every year. The good news is that there are a wide range of resources available online to help you manage them. We’ve compiled a list of just a few of them, including guides and recommendations from academic researchers, product manufacturers, consultants, and more.

University resources

  • Each year, Michigan State University Extension updates its insect and disease management recommendations for the next greenhouse season. These recommendations are updated annually to reflect pesticide effectiveness as MSU Extension specialists and their colleagues nationwide conduct research trials evaluating products against common pests or diseases of greenhouses. Pesticides are evaluated by a network of researchers involved in Project IR-4, a research group that facilitates the labeling of pesticides on specialty crops, including greenhouse crops.
  • The University of Massachusetts offers a list of management best practices for disease control, including a checklist of safety tips, cultural practices, airflow and moisture control, and soil treatment.
  • Good greenhouse sanitation is important for the production of healthy, disease-free vegetable plants. Efforts should be made to keep transplant production greenhouses free of unnecessary plant debris, soil and weeds that can harbor pests and diseases. Rutgers University has graft production information and treatment of dishes and trays.
  • the New England Vegetable Management Guide aims to help commercial growers by providing information on production techniques and pest control. The guide highlights management practices that will reduce disease in greenhouses and large tunnels, including the use of resistant varieties, sanitation, fungicides and cultural practices that keep humidity below 90% .
  • Want information on diseases targeting specific crops? Cornell University has you covered at its Horticultural greenhouse sitewith a closer look at over 20 crop categories, plus advice for one-time problems like impatiens downy mildew.

Supplier Resources

  • Distributor of greenhouse products Advancing alternatives offers advice on developing a greenhouse disease management program, starting with identifying your most susceptible crops. The site also offers advice on using automation to prevent greenhouse disease infestations.
  • OHP Literature Page features chemical class charts, crop-specific solutions, and disease control suggestions in the landscape.
  • Syngenta GreenCast Online Site allows growers to search for a wide range of foliar, crown/stem and root diseases. Each page includes a breakdown of susceptible crops, symptoms and management recommendations.
  • Need updates on nursery diseases? A SePRO Hort Corner Video features Dr. Ann Chase of Chase Agricultural Consulting discussing how to spot diseases, the difference between bacterial and fungal diseases and solutions to combat them and ensure you grow high quality plants.
  • Fighting disease is hard enough. But when fungicide resistance kicks in, the battle gets even tougher. Understanding how to identify resistance, why it occurs, and how to prevent it can go a long way to prolonging the effectiveness of your current fungicide program. Learn more in a bayer crash course.


It’s not always easy to find credible information through social media, but here are three videos worth checking out.

  • In one September 2020 webinarDr. Cheryl Smith, professor of extension and plant health specialist at the University of New Hampshire Extension, discusses cultural and chemical management options for the most common and troublesome diseases of greenhouse spring crops, including several disease management products included in the New England Greenhouse Floriculture Guide.
  • As part of an AgriLife Greenhouse and Nursery Webinar Series from Texas A&M University, Dr. Ann Chase presented on integrated disease management in greenhouse production.
  • Marrone Bio Innovations features organic experts Steve Bogash and Dr. Matthew Brecht of Marrone Bio Innovations and Alex Traven, Chief Grower of Peace Tree Farms in Kintnersville, PA, sharing best practices for scouting and managing common diseases in greenhouse crops.


In several states, a certified pesticide applicator may supervise one or more uncertified individuals performing application activities. Some of these states and tribes allow uncertified applicators to use restricted use pesticides. The certification and training rule for pesticide applicators was revised in 2017 and will come into force between 2022 and 2024, depending on your local jurisdiction. The Pesticide Educational Resources Collaborative collection is a resource for educators across the United States.


e-GRO (Electronic Grower Resources Online) is a collaborative effort of floriculture specialists to create a new online clearinghouse for alerts on diseases, insects, environmental, physiological and nutritional disorders seen in commercial greenhouses . Here are five recent disease-focused updates.

From greenhouse grower Archives

Last year, we proposed to take a closer look 10 of the Worst Greenhouse Plant Disease Problems. Growers who carefully scrutinize and know their crops well enough to spot early signs of a plant disease developing will have the greatest chance of reducing its impact on crop quality and yield.


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