One of the things I learned is not to have the leaves dirtied by the soil as this increases the risk of infection from bacteria/fungus found in the soil. Similarly, there have been advices to avoid watering the leaves as wet leaves encourages the risk of infection from airborne bacteria. I normally water the soil area to keep the leaves dry unless the leaves are too close to the soil like my sand ginger leaf.
At a local nursery, one of the staffs there had informed me that when plants are exposed to strong sunlight and heat and then to sudden rain, the leaves will burn at the tips and later turn brown. Wow, I didn't know that. I am still not sure how true it is because if it is, then its not so much caused by fungus as I would have thought but simply by the drastic change in temperature. What do you think? Could it be possible?
They are all, as you can see, part of my container gardening. Will be introducing them individually with pics in time to come.