It seems artificial, day-glow.  It almost sets your teeth on edge, but the bits of white and the green center, along with the delicacy of the petals and their wonderful points, softens the whole thing.  I love the almost blue-gray cool tones of the foliage that sets off the vividness of the yellow.  Then add the textures: the sand, the bracts (?) — oh, it is almost yummy.  At the meditation garden, perhaps even the plants meditate.