Changing rose

Hibiscus mutabilis, also known as the Confederate rose, Dixie rosemallow, cotton rose or cotton rosemallow, is a plant long cultivated for its showy flowers. Originally native to SE China and adjoining countries, it is now found on all continents except Antarctica. A minor change occurs when cooler weather intensifies pink-to-red shades, or age and hot weather fade them.  The second type of color change is due to the fact many roses are grafted, so the branches are one variety and the lower root system is a hardier rose