Plants need to get enough light first. You cannot expect a light-loving plant like roses, dahlia, sunflowers ... or most vegetables to grow in the shade. on the contrary, the trees that grow naturally under the forest canopy such as tea, azaleas, etc., are more tolerant of placing them under direct sunlight. It is thirsty and it may be about to starve! It doesn't really wither but without enough water in the tissue it cannot photosynthesize and growth will stop. It can even put effort into early flowering in one last ditch effort to create seeds to preserve the race before death.
