The most common cause of legginess is an insufficient or uneven access to light. When the light source is too dim or distant, seedlings grow quickly in height to get closer to that light. ... “They get leggy because they're looking for the light, so a lot of times you'll see them bending towards the light.”
How do I stop leggy seedlings?
There are four surefire ways to prevent your seedlings from becoming leggy and they all involve light manipulation.
- Provide direct light.
- Provide artificial light.
- Adjust supplemental light.
- Brush the seedlings gently with your hand or a ruler several times a day to strengthen the stems.
How do you fix tall leggy seedlings?
The best way to fix leggy seedlings is give them more light, ASAP! This could mean adding a supplemental grow light if you're not using one already, upgrading to a stronger light, or lowering your current light closer to the seedlings so it is more effective.
