Mistletoe country
Worcestershire, Herefordshire, Gloucestershire and Somerset are the heart of British mistletoe. The orchards around Tenbury Wells are so rich in it that the town has held holly and mistletoe auctions every winter for more than a century, and calls itself the UK's mistletoe capital. Here mistletoe grows mostly on apple trees, limes, poplars and hawthorns.
Why it becomes a problem
Mistletoe is a semi-parasite. It makes some of its own food, but takes water and minerals from the host tree through a root-like structure that grows inside the branch. A few clumps are harmless. Large colonies can significantly weaken the host tree, reducing its vigour and fruiting, and branches beyond a large clump can die back. Heavy mistletoe adds to the stress on old, neglected apple trees.
How to control it
- Cut out the whole branch section, back to a suitable side branch well below the point where the mistletoe is attached, where the branch is small enough. Snapping off only the visible clump leaves the part inside the branch, and the mistletoe regrows.
- On the trunk or major limbs, where cutting out isn't possible, remove the clump flush every year or two. This stops it flowering and fruiting and limits its effect on the tree.
- Work from late autumn into winter, when leaves are off and the mistletoe is easy to see, ideally before the berries ripen and birds spread the seeds to new branches.
- Treat the whole orchard, not just one tree, or birds will reinfect it from neighbouring trees.
For plums and cherries, do any cutting in spring or summer instead, to avoid silver leaf disease.
Safety and the law
Mistletoe berries, leaves and stems are toxic if eaten, so keep cut material away from children and pets. Mistletoe isn't a protected plant, but you need the landowner's permission to cut it. If the tree has a Tree Preservation Order or is in a conservation area, cutting out branches counts as pruning, so check with the council first. Mistletoe in tall limes and poplars usually needs a climber or platform, which is work for a tree surgeon rather than a ladder job.
