Hi,
Swim has been growing a BK outside now for a while in the last 2 weeks the leaves have started to curl like this

Does anyone know what is causing this, there are 2 other plants grown in the same conditions (black Bins) in the same spot and this hasn't happened to them although hey are 2 different plants.
Any help would be highly appreciated.
Swim has been growing a BK outside now for a while in the last 2 weeks the leaves have started to curl like this


Does anyone know what is causing this, there are 2 other plants grown in the same conditions (black Bins) in the same spot and this hasn't happened to them although hey are 2 different plants.
Any help would be highly appreciated.