Keep a watchful eye for problems that may be developing on the plants in your landscape. Timely prevention is always more effective and economical than reacting to problems once they have developed. Certain samples can be sent to your local Plant Disease Clinic (.pdf) for diagnosis.
If damages are observed and if Plant Health Care (PHC) treatments are necessary, contact a local Certified Arborist for an on-site diagnosis. Certified Arborist’s in your area can be found through the International Society of Arboriculture (ISA) search engine.
More information on each step:
- Seasonal care: Overview
- Evergreen branches
- Evergreen shrub shearing
- Deciduous branches
- Staking / guying
- Stem, branch, and foliage protection
Authored by Rebecca Koetter, Gary R. Johnson, and Dave Hanson: University of Minnesota
Funded in part by USDA Forest Service: Northeastern Area
Chart designed by Andrew Rose: www.handeye.us
Download & print your own poster or magnet copy of the “Seasonal Care for Trees and Shrubs in Northern U.S. Climates”
- Poster: 8.5″ x 11″ size (.pdf) – 408 KB
- Poster: 22″ x 28″ size (.pdf) – 16.77 MB – VERY LARGE!
- Magnet: 4″ x 7″ size (.pdf) – 560 KB