|Paeonia lutea var. ludlowii is more widely grown and more vigorous than the species , with bright green leaves and larger flowers, to 5 inches across, borne in late spring. S.E. Tibet. Plant in well prepared garden beds, with organic matter worked in. They respond well to a yearly fertilization, and addition of bonemeal. It is best to leave them undisturbed, dividing them infrequently. Tree peonies are woody, deciduous shrubs, coming in a variety of colors, including yellows and purples.