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.  

  • 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.