Pieris japonica 'PURITY' lily-of-the-valley shrub

Lily-of-the-valley shrubs are very popular ericaceous plants with attractive foliage and abundant flowering. Purity is another dwarf variety. It is similar to Prelude but more rounded and regular in habit. The flower buds are green and open into pure white, lily-of-the-valley-like white flowers in early spring. Leaves are elongated, narrow, pointed, and mid green, young growths are not usually distinctly different. It is perfect for a mixed border among dwarf conifers, for a large rockery, it will also look great in a large pot on a patio. Slow growing.

Pieris does not require much maintenance. But if you wish to have a perfect plant here are a few suggestions: cut off spent flower racemes to prevent them from making seeds. During late spring and summer check the leaves 2 or 3 times for tiny spots on the upper sides – they manifest insect attack whose miniature worms are living inside the leaves and produce sticky sap on the underneath of the leaves. In such case spray it with a suitable insecticide – one dose is usually enough. In winter remove heavy and wet snow from the top of the plant to prevent its fragile branches from bending or breaking.

Ericaceous plants require soil that is light, acidic, and constantly moist (not wet). If your garden soil is too heavy do not dig a deep hole but make a mounded and wide bed topped up with a good mixture of peat, fine bark chips, and leaf (forest) litter. Keep the soil moist by mulching. Slow-release fertilizers for acid-loving plants are advised. Hardy to about -27°C.

Last update 09-01-2012