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Learn about carbon's role in plant growth, and why it's such an important element for all living things.
Harrell’s EarthMAX is a unique soil additive designed to promote maximum soil and plant health in turf and ornamental programs.
Learn about nitrogen's role as a major nutrient from plant and soil expert Lynn Griffith!
What information is on a pesticide label, and why is it important?
In this course, Tropical Plant and Soil Expert Lynn Griffith takes a look at the damage caused by flea beetles, and explains what you can do to keep them away from your plants.
Nematodes are unsegmented roundworms that live just about everywhere on Earth, but some varieties can cause problems for growers and turf managers.
Spider mites come in a variety of shapes and sizes, but they all have one thing in common: they’re bad news for plants.
In this learning course, Lynn Griffith discusses the primary nutrient phosphorus and how it relates to horticulture.
Learn about how plants cope with high temperatures.
Plants aren't able to think the way we are, but that doesn't mean they're helpless.
Learn about water quality and how it impacts plants and soil.
Learn Techniques for Taking Soil & Tissue Samples for Testing!
Ever noticed that plants respond better to rain water than to irrigation water?
This course describes how soluble salts impact fertilizers and plants.
The following CEU-credited courses are available to myHarrell's customers.
Core aerification explained!
Learn how Bicarbonates affect soil and plant health
This learning course by Lynn Griffith covers the important nutrients involved in growing roses.
Learn about boron's function in plants, and how to check for (and correct) deficiency and toxicity situations.
If you are considering a golf course renovation, allow us to at least show you what a Polyon grow-in program can do!
Turf & Landscape
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on August 22 by Matt Shook
in Specialty Agriculture
Increasing fruit production doesn't always involve some high-tech method. Sometimes it's the simple solutions that can make the difference.
on August 15 by Gregory Nicoll
in Golf, Sports Turf, Turf & Landscape
In an industry with so many variables, where the expectation is perfection, having a process usually means better results.