Heliotropic
The Century Dictionary and Cyclopedia
Turning or tending to turn toward the sun; specifically, of, pertaining to, or characterized by heliotropism.
the GNU version of the Collaborative International Dictionary of English
adjective.
Manifesting heliotropism; turning toward the sun.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
exhibiting
heliotropism