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.
Since other orchid varieties will not bloom again from the same flower spike, you can cut their spikes back to the base of plants after flowers fall. After flowers fall off, use a sterile razor blade to cut the flower spike and discard the tool after a single use. Optionally, you can disinfect a cutting tool with alcohol or flame it to kill germs.