What Are Fan Leaves in Cannabis?
Fan leaves are the large, broad leaves of the cannabis plant primarily responsible for photosynthesis. They capture light and convert it into energy that fuels overall plant growth and development. Fan leaves typically have multiple leaflets and are found throughout the vegetative stage and early flowering.
How Growers Encounter Fan Leaves
Growers encounter fan leaves constantly when inspecting plant health, training plants, or pruning. Changes in fan leaf color, shape, or texture are often the first visible signs of nutrient issues, stress, or environmental problems. Fan leaves are also commonly removed selectively to improve airflow and light penetration.
Why Fan Leaves Matter
Fan leaves act as the plant’s main energy producers and nutrient storage sites. Healthy fan leaves support strong growth, proper flowering, and higher yields. Removing too many fan leaves too early can slow growth and reduce the plant’s ability to recover from stress.