I've been growing pepper and chili plants in a greenhouse on my balcony since March and they have been growing strong. However, I started a new job last week and have not had the time to tend to them. Now the leaves have curled lengthwise, some have turned yellow and some have grown a green moss on the soil. The soil near the plants is quite dry. Only the lower leaves are turning yellow on one plant. I have pruned some stems and found no discolouration within the stems.
Since starting the new job, I haven't watered or fed them, but the greenhouse has a fairly damp environment, with the walls and roof covered in drops of water. I've watered them with a little liquid food and left them out of the greenhouse in sun and light wind for 12 hours now and most of the leaves are starting to perk up. The yellow leaves on one plant have fallen but the upper leaves on the same plant have perked up.
Any ideas what might have happened to them? Could it just have been lack of food and water?