Indirect light throughout the day is the best option. When grown indoors, place it in any window, except a large southern-facing window where it may get too much direct bright sunlight. Cryptanthus needs lots of sunlight, but not direct sunlight. The bright UV rays can scorch the leaves and kill it.
Just so, how do you take care of Earth Star?
Earth stars don’t require a lot of fertilizer. If you do wish to feed them, use a general-purpose houseplant fertilizer and follow the directions on the packaging. Try to feed them at least once a year (preferably in spring or summer, when they’re actively growing).
Keeping this in consideration, can Cryptanthus take full sun?
Shade from tall trees outdoors or a sunny room without direct sun exposure is ideal for Cryptanthus. As mentioned above, Cryptanthus are adapted to survive under the cover of trees in humid climates. Too much direct sun can cause bleached or sunburned areas on the plant’s leaves.