If it senses strong sunlight, it opens its folded petals to absorb the sun's rays with its whole body.
Trivia
Despite the fact that Cherrim's bud is closed as a default, this is the first time a TCG card actually depicts a Cherrim with its bud closed.
This card's artwork depicts a solar eclipse, a recurring motif throughout illustrations in the Arceus expansion. This motif is likely a reference to the solar eclipse which occurs during Arceus and the Jewel of Life.