flower buds are pink. The freshly opened flowers are yellow, which become or further shift in colour to scarlet within 7-8 h followed by magenta after 26 h colouration around the mouth of the corolla tube.A study by botanists H.Y. Mohan Ram and Gita Mathur, published in the Journal of Economic Botany, found that pollination triggers wild lantana flowers to begin changing from yellow to red. The authors suggest that the yellow color of open, unpollinated flowers directs pollinators to these flowers on a wild lantana.