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PLANT POTENTIAL Understand your plant
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The Plant Potential knowledge library

A better understanding starts here.

Explore plant biology, the language of plant care and the research behind product claims.

New to plant science?

Start with Plant Biology for the foundations, or choose one of the four topics below.

  • Titan arum in full bloom in a conservatory, its tall spadix rising from a purple and yellow spathe

    Plant Biology

    Understand the processes behind plant growth, roots and development.

  • Broadleaf plantain growing through a crack in a concrete pavement

    Plant Resilience

    Explore how plants respond to stress and a changing environment.

  • Greenhouse with long rows of truss tomatoes and a grower working from a pipe-rail trolley

    Grower Guides

    Put plant knowledge into practice: roots, feeding, uptake and everyday growing decisions.

  • Cannabis plant seen from above, with its fan leaves around a developing flower

    Cannabis Grow Guides

    From trichomes and terpenes to harvest and drying: growing knowledge specific to cannabis.

Photos cropped to fit, via Wikimedia Commons unless noted: Richard J. Rehman (CC BY-SA 4.0), Jesse Taylor (CC BY-SA 3.0), and CannabisVera via Pixabay (Pixabay Content License).

Or start with a subject.

Choose a subject to see the related articles from every category.

Common grower questions

Start reading.

  • Close-up of a cannabis flower densely covered in glandular trichomes, with curled stigmas and surrounding green leaves.
    Cannabis Grow Guide

    When Is Cannabis Really Ready to Harvest?

    Trichome colour is a useful maturity indicator, not a chemical test. Learn how trichomes, pistils, flower maturity and genetics together define the...

  • Harvested cannabis branches hanging upside down from overhead racks in a drying room.
    Cannabis Grow Guide

    How to Dry Cannabis Flowers Without Ruining Them

    Drying cannabis is a balance between moisture removal, microbial risk and aroma preservation. Understand temperature, humidity, airflow, trimming and water activity beyond...

  • Cannabis plant in a pot with prominently yellowing leaves and greener foliage in the background.
    Cannabis Grow Guide

    What’s Wrong With My Cannabis Plant?

    Yellow leaves do not automatically mean a nutrient deficiency. Learn to check environment, water, roots, EC and pH before reaching for another...

  • Hand holding a red digital pH meter with its probe in water; the display reads 4.96.
    Cannabis Grow Guide

    pH, EC, Water and Nutrient Lockout in Cannabis

    Nutrients can be present without being accessible. Explore how pH, EC, water, oxygen and root function interact to determine nutrient uptake in...

  • Cannabis plants photographed from below beneath several brightly illuminated grow lamps in an indoor cultivation facility in Denver.
    Cannabis Grow Guide

    Is It Really Light Burn? PPFD, DLI and Plant Capacity

    Light stress is about more than PPFD. Understand DLI, canopy photosynthesis and how water, roots, temperature, CO₂, nutrition and acclimation determine the...

  • Overwatered or Underwatered? Understanding Cannabis Droop
    Cannabis Grow Guide

    Overwatered or Underwatered? Understanding Cannabis Droop

    A drooping cannabis plant does not always need more water. Learn how pot weight, root-zone moisture, oxygen and water use help distinguish...