Creating a Resilient Garden in the Face of New Pest Pressures

  • 5441 Southeast Belmont Street Portland, OR, 97215 United States

Climate change, extreme weather events, and exotic pests are all potential threats to a beautiful and productive garden.  Join us as Brooke Edmunds, OSU Extension Community Horticulturist as she illustrates how new insect and disease pests are invading and adapting to Oregon gardens.  It’s not all doom and gloom though.  Brooke will end on an encouraging note and provide tips on how to create a resilient garden that can thrive in times of change.

Brooke Edmunds is the OSU Extension Community Horticulturist in Linn, Benton and Lane County.  She has a Ph.D. in Plant Pathology from North Carolina State University and has previously worked for the Oregon Department of Agriculture and Colorado State University Extension.  She lives in Salem where she enjoys edible gardening and hiking with her husband and two kids.  


Climate Change and our Gardens

Answers and Links from Brooke Edmunds, PhD OSU Extension
brooke.edmunds@oregonstate.edu

What is the cause of climate change?
http://climate.nasa.gov/causes/

How has it changed over time?
http://www.climate-lab-book.ac.uk/files/2016/05/spiral_optimized.gif

What is the likely effect in the PNW?
Predicted warming of 2.7ºF by 2030 & 5.4ºF by 2050 • Changes in precipitation? • Increased extreme weather events? (From: Scientific Consensus Statement on theLikely Impacts of Climate Change on the Pacific Northwest, 2004)

How could this affect our gardens? 
Plant phenology changes • Exposed to new/different pest pressure Good Read: R. Bisgrove and P. Hadley. 2002. Gardening in the Global Greenhouse: The impacts of climate change on gardens in the UK. Technical report online.

What is plant phenology?
Study of cyclic & seasonal natural phenomena • Bud break timing • Flowering • Fruiting • Leaf expansion • Fall leaf colorhttp://depts.washington.edu/uwbg/wordpress/wp-content/uploads/bigleafflower.jpg

also www.usanpn.org

Effect of climate change on pest problems? It’s Complicated! https://upload.wikimedia.org/wikipedia/commons/f/f3/Plant_Disease_Triangle.png also
http://www.420genetics.com/faq/pest/afig.2.JPG also http://www.420genetics.com/faq/pest/afig.2.JPG

Stressed trees are more vulnerable
 http://oregonforests.org/sites/default/files/blog_photos/Zombie_tree_feature.jpg

Precipitation can increase disease spread
http://www.nature.com/nature/journal/v466/n7308/images/466824a-f1.2.jpg  also
http://www.howtobeadad.com/wp-content/uploads/2014/12/8-ball-header-575x250.jpg

What will the future hold for our gardens? Education + action is key http://www.un.org/climatechange/take-action/ also http://toolkit.climate.gov/

Increase Diversity!
https://upload.wikimedia.org/wikipedia/commons/a/af/Avenue_of_trees_-_geograph.org.uk_-_185473.jpg also 
catalog.extension.oregonstate.edu

Take a class!
 www.hungrypests.com

Get involved as a citizen scientist!
 www.usanpn.org