Welcome to Heavy 16

For years, Heavy 16 Professional Plant Nutrient has been the preferred choice among elite growers across California. Now, this artisan-grade blend is available to growers around the world.

Heavy 16 breaks free from the hype and hassle of other nutrient lines and eliminates the need for excessive additives by utilizing only the highest-grade ingredients in the most scientifically advantageous formulation on the market.

Heavy 16 is powerful, yet simple. Heavy 16 is a complete two-part nutrient and features all of the essential macro and micro elements that plants require to produce maximum yields of unsurpassed quality.

Heavy 16 performs robustly in soil and hydroponic gardens alike. Used alone, Heavy 16 produces superior crops, but it can also be combined with organic stimulants, compost teas, enzymes, hormones and microbial inoculants for fantastic crop customization.

Heavy 16 is hand-brewed in micro-batches to ensure quality and freshness and each ingredient is refined to ensure purity and consistency. Heavy 16 is committed to this artisanal approach to quality nutrient production. Based on our phenomenal results and customer feedback, we wouldn't have it any other way.

Come see us at these Vendor Days events

  • 6/13 - Golden Valley Hydro Yuba City, CA
  • 6/13 - Growing Wild Garden Supply Hayfork, CA
  • 6/13 - High Tech Garden Supply Taylor, MI
  • 6/15 - Way to Grow Colorado Springs
  • 6/16 - Way to Grow South Denver
  • 6/18 - Way to Grow Lakewood
  • 6/19 - Way to Grow Silverthorne
  • 6/20 - Vendor Day HTG Prospect Park, PA
  • 6/20 - Appreciation Day Urban Garden Center Brewer, ME
  • 6/22 - Way to Grow Fort Collins
  • 6/23 - Way to Grow Boulder
  • 8/28 - Vendor Appreciation Day High Tech Garden Supply Kalamazoo, MI
  • 9/26 - Tomato Fiesta at The Soil King
  • 10/18 – High Tech Garden Supply Portland, ME

Come to our Anniversary Celebration

  • 6/15 - Indoor Grow Store/MJ Tools
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Exploring the Heavy Philosophy