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.
You can cut the spike (stem) back to just above where the new stem that branched off. Once that side stem has finished blooming, you should cut the spike down at the base of the plant. Orchids do naturally lose leaves over time, but left loss could mean that the plant is not happy.