Stretch, often called flower stretch, is the period of rapid vertical growth that occurs when cannabis plants transition from vegetative growth into flowering.
WHAT IS THE STRETCH STAGE?
Stretch happens as a plant shifts its energy toward reproduction. During this time, stems elongate quickly, sometimes doubling or even tripling in height depending on genetics, environment, and training.
Stretch typically begins during pre-flower and slows once full flowering is underway.
HOW IT’S USED
Growers account for stretch by:
– Planning tent height and light placement
– Training plants before flowering
– Installing trellis nets or plant supports
– Adjusting light intensity to manage internodal spacing
Understanding stretch helps prevent plants from outgrowing their space.
WHY IT MATTERS
Stretch affects:
– Final plant height
– Canopy structure
– Light penetration
– Yield potential
Poor planning during stretch can lead to overcrowding, light burn, or airflow issues later in flower.
LIMITATIONS & NOTES
Stretch varies widely between strains and growing styles. Autoflowers generally stretch less than photoperiod plants, but environmental factors like light intensity and temperature can still influence growth.t