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.
Keep insects away from your flowering orchid because if an insect pollinates an orchid bloom, the flower will wilt and die soon after. Keep your orchid away from air pollutants (i.e. aerosol sprays, paint thinner, smoke and the ethylene gas released from ripe fruit) because they can cause orchid blooms to fade.