- Designed For
- A course for professional and hobbyist gardeners, professional landscapers and retail nursery owners.
- Online, self-paced
PLEASE NOTE: Between June 30th at 11am to July 1 at 12pm we will be performing a site update, and will not be able to accept credit card payments during that time. We apologize for the inconvenience. The system will be fully functional on July 1 after 12pm.
All plants have basic nutrient requirements. Observing plants for nutrient deficiency symptoms can be helpful in determining if a specific nutrient is lacking. Learn how to identify symptoms of nutrient deficiencies by testing soil quality, determining the location and appearance of the problems or addressing other plant stress factors.
What You'll Learn
- A systematic approach to correctly diagnosing plant problems based on available symptoms and signs.
- Differentiation of environmental and cultural problems from those caused by biotic organisms.
- Issues with soil quality especially in constructed landscapes, nutritional deficiencies and excesses, correct problem identification and solution recommendation.
Neil Bell is a community horticulturist for Oregon State University Extension Service. Since 2000 he has overseen the OSU Master Gardener™ program in Marion and Polk counties and has assisted homeowners, Master Gardeners, landscapers and retail nursery owners with thousands of different plant problems.