Today we're at Descanso Gardens in Pasadena, where the roses are in full bloom.
This gouache study takes about 45 minutes. I start with a yellow-ochre underpainting and knock in the darks. Then I paint the cool shadow whites and sunlit whites opaquely.
The petals have the slightest tinge of yellow, which is multiplied in the interstices as the transmitted light finds its way deep into the flower.