Understanding Nitrogen
Course Information
Welcome to the Understanding Nitrogen Course!
In this learning course, it's up to you to save a leaf from nitrogen deficiency! You'll need to learn about nitrogen and correctly answer several questions to successfully complete this course.
Plant and soil expert Lynn Griffith will explain everything you need to know.
Click the View Course Material button on the right to start this course.
Lynn Griffith
A graduate of Duke University, Lynn Griffith has been involved with the horticulture industry for decades as a professor, professional speaker, author, consultant and head nursery grower. Lynn provides his expertise in plants and soil in the form of educational courses and consultation for Harrell's LLC.
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In addition to being the nation’s largest distributor of branded fungicides, herbicides, and insecticides, Harrell’s produces custom-blended fertilizers, specialty liquids, and wetting agents. Additionally, Harrell’s is the exclusive US owner, formulator, and distributor of all POLYON® branded products.
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PRESS RELEASES
STAY EQUIPPED
Never stop learning. Access FREE continuing education courses from Harrell’s.
LET'S GROW
