I left my orchids out in the sun one day, and the next thing I know one of the leaves is turning yellow. It was also kept in a room that could’ve gotten pretty cold. Anyone know what’s wrong with it and what I should do? Thanks.
It got sun burned. Move it to a location where it won’t be exposed to direct sun. Leave the discolored leaves alone. Depending on the severity of the damage, they’ll scar or die.