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.
Orchid seeds landing on a tree trunk are attacked by fungi, and in some cases the seeds are killed, in some cases the seeds kill the fungus and then the orchid starves to death, in some cases the orchid does not allow the fungus entrance and it will die too, but in a small fraction of cases, the fungus repeatedly attacks the orchid while the orchid repeatedly degrades and consumes the tissues of the fungus.