Tree Paeony Growing Tips Tree Paeonies and Herbaceous Paeonies both enjoy similar growing conditions. They should be planted in the Autumn once the plant is going dormant. This gives them time to become established before they begin their spring growth and commence to flower. We sell our plants in pots and recommend that they be left in the pots and planted out from April to November, the earlier the better. Once established the plant will grow and bloom in a suitable spot for many years. Site Because the paeony plants live for such a long time it is advisable to prepare the site very thoroughly before planting. Choose a well drained area that is free of tree roots. Space plants 2.0 metres apart as they do not like overcrowding. They like the sun, but in hotter areas, some partial shade is recommended especially while flowering. Shelter from the prevailing strong winds that may break branches and tear leaves. Planting *Dig a hole that is 600mm by 600mm to take the root system of the plant, make sure the soil to fill the hole is friable and crumbly, add well rotted compost or humas (bag of potting mix mixed with soil is ideal. *Plant your grafted tree paeony with the grafted union of the scion and the rootstock at least 100mm to 125mm below ground level. *Stake well while the plant is young, once established the plant will look after itself.] Cultivation *Dead or broken branches can be pruned back over the winter. *The plant does not require a lot of fertiliser. We use nitrophoska blue special 12.12.17.2 in the spring before flowering. Scatter 1 tablespoon around the outside of the perimeter of the leaves for a 2 year old plant, 2 tablespoons or more for an older plant. Fertilise in Autumn with sulphate of potash and lime in May. * Watch for botrytis.It is an air born spore and appears as: (a) a dense grey/brown mould at the base of the shoots which may then wilt and die. (b) botrytis can attack foliage, flower buds, and stems as well. These infections appear later in the season as irregular dark brown areas on the leaves. Buds which are affected turn brown and wither and the roots area spngy brown colour. Spray of necessary with Benlate first then a fortnight later with Captan following manufacturers instructions and recommendations. Repeat once more if necessary. Remember, sanitation is the best control for disease so careful inspection and removal of any infected part is very important. * Do not over water. Your paeony can withstand very dry conditions but will not tolerate becoming waterlogged. * Maintain and keep weed free. Do not plant perennials (other than bolbs) too close. They can smother the plant.