Close the grill and cook for about 15â20 minutes, turning every 5 minutes or so. Check the corn ready when the husks start to get kernel-shaped char marks and pull away from the tip. If the kernels don't feel tender when poked with a fork, it's fine to leave the corn on until the husk chars black.
Orchids will lose their flowers after a certain time because they are spent and are producing new flowers on the stem. Also, some will lose flowers when they are too dry or have parasites.
The questions are all roughly the same - is my plant sick, is it dying, what can I do to prevent the leaves from yellowing? It is important to understand the natural lifecycle of an orchid. The plant grows new leaves and/or new pseudobulbs and from this new growth comes the new bloom. The older leaves, and older pseudobulbs, over time will die back. In the same way that new growth comes, so will old growth wither and die. This is normal and natural.