Tree peonies provide loads of colour to garden borders in spring they have gorgeous large flowers measuring up to 25cm 40103441 in diameter33 they can have in excess of a hundred blooms on one mature plant and will flower every year tree peony 39luoyang hong39 is a cultivar with deep magenta pink flowers with yellow stamens in the centre it looks great planted amongst other peonies with different coloured flowers peonies are a hardy shrub and are disease resistant the pe