Tree peony / tree paeony

Paeonia rockii

Tree peony / tree paeony - Paeonia rockii

Common Name: Tree peony / tree paeony
Genus: Paeonia
Species: rockii

Category: Shrubs and Sub-shrubs
Growth Rate: Average
Features: Has interesting foliage, Suitable for growing in containers, A good architectural plant

Hardiness: HardyHeight: 2.00 m (200 cm)
Sun/Shade: Full sun or Partial shadeSpread: 2.00 m (200 cm)

Foliage Type: DeciduousFlower Colour: Pink, White
Foliage Colour: Green, Grey/SilverFlowering Period: April & May

Soil Type: Normal/Loam
Soil Moisture: Moist, but well drained

Until recently this beautiful cultivar was rarely seen as it was considered too difficult to propagate but fortunately things have moved on and it is now more widely available. It is a beautiful form with large single white flowers that are often flushed with pink and each petal has a purple stain at their base. The grey-green dissected foliage of this evergreen shrub is dramatic enough to provide architectural interest towards the back of a mixed border even when the flowers have faded.

  • Garden care: Protect from cold winds and early morning sun. Support the branches of young shrubs with canes to prevent the massive flowerheads from being battered by rain. Tree peonies are hungry feeders so ensure that container-grown specimens receive a top-dressing of a slow-release fertiliser in spring. In the border apply a top-dressing of a balanced slow-release fertiliser around the base of the plant in early spring and mulch with well-rotted garden compost or manure. If the plant shows signs of collapse or the leaves become spotty this may be a symptom of peony botrytis. Remove affected leaves immediately. In the autumn cut off all of the foliage and dispose of it to avoid reinfection the following spring. The older stems of tree peonies have a tendency to become brittle and snap so cut these back to the ground in autumn every two or three years.

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