University of Minnesota
College of Food, Agricultural and Natural Resource Sciences
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Welcome to CUES, Center for Urban Ecology and Sustainability!  You will find practical information on IPM, insect identification, insecticide choice, and conserving beneficial insects in greenhouse, nurseries, landscapes, and Christmas trees.

          CUES Mission Statement  

CUES strives to educate landscape managers and urban residents about ways to embrace environmental stewardship by practicing sustainable management. A landscape managed through sustainable methods requires low inputs of labor, fertilizers, herbicides, insecticides, and fungicides, while supporting beneficial insects, bees, butterflies, and birds. Excessive use of these chemicals can pollute surface and ground water and disturb natural ecosystem processes.

Sustainable management embraces four major principles:

  1.  conserving biodiversity
    The naturally diverse landscape discourages outbreaks of disease or insects. Such a landscape also attracts beneficial insects, bees, birds and butterflies.
  2.  restoring native vegetation
    Consider using native vegetation in landscapes. Restore native vegetation to shorelines to reduce nutrient enrichment through stabilizing sediments and shorelines.
  3.  promoting nutrient recycling through composting
    Backyard and community composting is an ecologically sound way of disposing of yard wastes and increasing nutrients in urban soils.
  4.  using integrated pest management to control insects and diseases
    Inspect and monitor your plants' health on a regular basis, before problems are out of control. Instead of routinely spraying for insects, use spot treat problems of soft pesticides such as soaps, oils, and biorational products such as spinosad. Adopt these biorational practices which target the pest and not the naturally occurring biological control agents, such as parasitoids and predatory insects. Use naturally resistant plants. When necessary use hard pesticides, timed to the vulnerable stage of the insect, so the application has a major impact on the pest.

A Minnesota Extension Service Collegiate grant in 1995 funded the creation of CUES, Center for Urban Ecosystems and Sustainability. CUES is an interdisciplinary program with participants from the Colleges of Agriculture, Food, and Environmental Sciences; Biological Sciences; Natural Resources; and Landscape Architecture.

This website is an online educational component of the research and outreach program of Vera Krischik.

Book on IPM of Midwest landscapes, click to read all the book chapters 



Click to order IPM of Midwest landscapes

Recent talks and handouts

2018 May 7 MG Henn Managing JB

2018 Feb 22 webinar profit by enhancing biocontrol in greenhouse/nursery, landscape, and turf.pdf

Beneficial insects

2018 Feb 20 webinar managing Japanese beetles.pdf

Acelepryn  factsheet

Acelepryn label

Acelepryn section 2ee label

Multistate EAB recommendations

2018 Updated Krischik insecticide toxiicity to pollinators

2018 Green Expo talk on organic compared to IPM management

2017 Thrips control in greenhouses

2017 updated Toxicity to Pollinators of Insecticides Used in Greenhouse, Landscapes

April 2017  Neonicotinoid insecticides and beneficial insects.pdf

2014  Krischik's talk entitled  New turf insecticides and IRAC numbers

August 5 2014 MNLA  Pollinators a 360 degree prospective, Krischik's slideshow, entitled  Neonicotinoids and pollinators

June 2 2014 Dakota County Master Gardeners, Krischik's slideshow

June 2014 MN Golfcourse superintendent's "Hole Notes" on White grub Management

May 2014 MN Golfcourse superintendent's "Hole Noters" on Ant Management

2014 website slideshows and quizzes, Master Gardener online certification workshop on bees

 2014 March 14 MN Christmas Tree Association winter meeting slide show

2014 June MN Christmas Tree Association Spring Newsletter on How to practice IPM in a Christmas Tree Farm

2011 Penn State University, Christmas tree insecticides