Few possess the beauty of a tree peony – the gloriously colored blooms that blossom – and create a stunning display – every early summer. It's easy to understand why so many gardeners can't resist their beauty – including, most famously, Martha Stewart – the lifestyle magnate – who recently shared her tree peonies with the world. And aesthetics aside, her post comes with an important lesson.
'Some of the many tree peonies in bloom in my garden right now. They are truly beautiful flowers with lovely characteristics. Remember, never prune a tree peony plant!'
Knowing when to plant peonies for an early summer show is the first step to success. However, the question of pruning is a different story. Martha's instructions are clear – we should avoid pruning at all costs – but is there ever any exception? H&G's resident garden expert, Drew Swainston, weighs in on the discussion.
Tree peonies do require minimal pruning, though they can need some work once they are well-established,' he says.
'Sometimes a tree peony can get too big for its space and contain lots of unproductive older wood. If this happens, prune in the spring before they start actively growing, as they may bleed if you leave them any later, and they will be weakened.'
Though, in many ways, Drew agrees with Martha. 'The downside to any tree peony pruning is that you will sacrifice some of that year’s blooms,' he says. 'Apart from that rare regenerative pruning, most years a tree peony will require little more than deadheading and the removal of any dead shoots'
The experts at the RHS mirror this teaching. In the discussion of how to grow peonies (and care for them around the year), they say that the tree requires pruning – with a few exceptions.
'Just remove flowered shoots, cutting them off just above the new growth on the stem in summer; or in the autumn after the seeds are collected if desired,' they say. Also, we should remove any dead shoots in late winter – 'cutting back to a healthy bud.'
The RHS adds that tree peonies tend to produce more vigorous, upright stems, so removing some of the oldest stems at ground level in fall can help control their size during springtime.
This eternal bloom has topped garden trends in recent years – and with Martha Stewart's approval, we expect they will continue to impress for many seasons ahead. We're joining the tree peony movement with these beautiful blooms from Lowe's below.
