Could light too weak or too far be causing stretching?

Windowsill grow. LED too high. CFL/fluorescent not strong enough. Fix: Move LED to 18-24" from seedling Use a proper grow light (even a small 100W LED beats a window) Bury the stem up to the first set of leaves when transplanting — fixes the stretch

Environmental StressModerate

Stretching Cannabis Seedlings

Stretchy seedlings are thin, tall, and fall over — a sure sign the light is too far away or too weak. Caught early, easy to fix.

What it looks like

●Tall, thin stems that can't support themselves
●Big gaps between leaf nodes
●Seedling falls over or leans toward light

Quick diagnostic checks

1Lower the light OR get a brighter one

2Bury the stretchy part when transplanting

3Add gentle fan breeze — strengthens stems

Causes ranked by likelihood

1. Light too weak or too far

Most common

Signs

●Windowsill grow
●LED too high
●CFL/fluorescent not strong enough

Fix

✓Move LED to 18-24" from seedling
✓Use a proper grow light (even a small 100W LED beats a window)
✓Bury the stem up to the first set of leaves when transplanting — fixes the stretch

⚠️When to worry

Stretched seedlings recover fine if you bury the stem. Left uncorrected, they'll fall over.

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