I've been growing some tomato seedlings that started out really strong, but now that they have about 2-3 sets of leaves, they're looking weaker and weaker. Many of the leaves are turning purple, and it seems like their growth has stalled. They aren't dying, but I'm really concerned. What could be causing this?
2 Answers
Are you using any fertilizer? Your seedlings could definitely benefit from a nutrient boost, especially if they seem to have stopped growing.
It might be a case of overwatering! Make sure not to let them sit in wet soil; the top inch should be dry before you water again. Also, sometimes when seedlings aren’t growing new leaves, they might be focusing their energy on developing their root system instead.