Sue Sanderson

Sue Sanderson – our horticulturist expert

Sue Says
Tree peonies can take a few years to settle in. It’s worth checking the area you planted them in to make sure they are growing in ideal conditions.

Peonies are at their best in sunny positions and won’t do well in heavy shade. They also need shelter from cold drying winds and strong early morning sunlight. Check the soil isn’t too wet as the plant will struggle and eventually rot – peonies like moist soil, but it must be well drained. You may also want to check that the peony is planted so that the grafted union sits at least 10cm (4”) below the soil surface. Shallow planting may hinder establishment and delay flowering.

Feed your peony with a high potash fertiliser during the growing season as they are heavy feeders. The potash will encourage flower production. Finally, if they are growing in a frost pocket then you may need to provide them with winter protection this year to prevent them from being frosted again.

Tree peonies need only minimal pruning to remove any wayward or dead shoots. It’s best not to prune your young tree peony during the first few years (except for dead shoots) while it becomes established.

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