Why Your Seedlings Are Leggy (Tall and Thin)
Leggy seedlings are caused by not enough light. Move to stronger light or add a grow light 2–4 inches above plants. Rotate pots daily.
A leggy seedling has a long, thin, pale stem — the plant stretching toward light.
Fix It
- Move to stronger light.
- Add grow light. 2-4 inches above leaves.
- Rotate pots. 1/4 turn daily.
- Cooler temperature. 65-70°F.
- Repot deeper. Bury stem to first leaves.
Prevention
| Factor | What to Do |
|---|---|
| Light | 12-16 hours, close |
| Temp | 65-70°F |
| Spacing | Thin so leaves don’t shade |
| Rotation | Daily 1/4 turn |
Common Questions
Can leggy seedlings recover? Slightly leggy ones can. Severely leggy usually don’t.
Should I cut off the stem? No. Bury it.
Do I need a grow light? If window gets less than 6 hours, yes.
How close should the light be? 2-4 inches.
Why only some are leggy? Uneven light. Rotate.
Will they produce? Usually not well. Better to restart.