White Rose Pink Spots . White spots on rose bushes can indicate the presence of insects or diseases. White roses mean love, affection, purity, innocence, spirituality, and loyalty. Pin on Flowers! Flowers! from www.pinterest.com It is very hard to control. Prairie star is marketed variously as white, light yellow or pink. Water the soil, before spraying the rose bush and spraying the soil beneath it, making sure you spray the leaves undersides as well on top of the leaves.