Oh yeah, this is troublesome! How do I know the wilt is over-watering or under-watering?
Since the leaves are covering all over the pot, I don't know how to water from top, so I then do it under. I thought I should keep the water at bottom (reservoir) full all the time especially now it's hot and dry here. But suddenly I got this big leaf on the edge wilt and not sure it's drown or burned? Any advice? Thanks