Harrells Logo

PEOPLE

MARKETS

RESOURCES

Plant Physiology for Growers

9/24/2018 - By Lynn Griffith

Welcome to the Plant Physiology for Growers video series, with Tropical Plant and Soil Expert Lynn Griffith.

Lynn is an expert in the horticulture industry, as well as hands-on consultant. He has been a star class speaker for many facets of the industry, and his passion is making sure plants are growing and thriving.

These five videos cover a variety of topics on plant development and nutrition.

Part 1: How Plants "Think"

What's covered in this video: 

  • How plants are able to sense their surroundings and react to their environment
  • The basic requirements for plant growth
  • How plants get what they need from the soil and the atmosphere

Part 2: Conditions that Affect Growth

What's covered in this video: 

  • How dry conditions inhibit plant growth
  • The importance of light and carbon dioxide
  • How plant hormones help during dry conditions
  • The importance of a plant's moisture economy and transpiration

Part 3: Light, Heat and Moisture Conditions

What's covered in this video: 

  • Plant stomates: what they do, and how they work
  • How plants cope with heat and moisture loss
  • How plants take in moisture
  • The balance of salts in roots vs. the soil

Part 4: Plant Nutrient Absorption

What's covered in this video: 

  • The functions of plant roots
  • The role of nutrients like calcium, nitrogen, magnesium and boron
  • Nutrient needs, and how deficiencies affect plants

Part 5: The Importance of Iron

What's covered in this video: 

  • How to visually spot an iron deficiency
  • Factors that affect iron uptake
  • How well different leaf types take in foliar nutrients

Related Resources

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.

TEAM HARRELL'S

STAY EQUIPPED

Never stop learning. Access FREE continuing education courses from Harrell’s.
LET'S GROW

PRESS RELEASES

PRESS RELEASES

STAY EQUIPPED

Never stop learning. Access FREE continuing education courses from Harrell’s.
LET'S GROW
youtube iconfacebook iconinstagram icontwitter iconlinkedin icon
© Harrell's, LLC 2025