These were planted in 12 inch pots with around 2 parts old self-made potting soil (vermicompost+perlite+vermiculite+cocopeat) and 1 part garden soil. I fell sick and was unable to walk up and water the plants for 3~4 days. Don't know how dry they got. Two of them died then, but afterwards one was alive. However, it died too even after watering. Was there a problem in the soil/sunlight or did these die because of the lack of optimal watering?
Here is how the plants dried up.