Plants: Coleus

I transplanted some of my baby Coleus to slightly bigger pots. Sadly, I think they were placed in an area that was too hot. It appeared the stem was dried out right where it met the dirt. Was the dirt too hot and drying the stem out?

I asked a few people in my online plant group, they suggested snipping the stems and placing them in water so they can grow new roots. They look pretty nice now! 🤗 I’m afraid to put them in dirt again because I might ruin them!