Where do oak processionary moths come from?
Oak processionary moth is native to southern Europe that has become established in parts of London and its surrounds. Whilst it can defoliate oak trees the primary concern is the caterpillars hairs, these can cause irritation if in contact with human skin.
What eats oak processionary moths?
OPM does have some natural enemies in its native range to include some species of birds, beetles, small mammals, and parasites.
How does Oak processionary moth spread?
People or animals can come into contact with OPM hairs if they touch OPM caterpillars and their nests by brushing past an infested oak tree or are near infested trees as hairs can be blown about in the wind.

Are oak moths harmful?
– Humans. The caterpillars produce hairs which cause irritation to humans and animals. The effects of these hairs include: itchy rashes, sore eyes, uncomfortable throats and breathing difficulties.
How do you get rid of oak processionary caterpillars?
The combined use of Entonem and the Buxatrap is the most effective way to safely and naturally combat the oak processionary caterpillar.

How do you control oak processionary moths?
Control OPM : spraying To control the spread of OPM you can: spray the affected tree with insecticides. if you have oak trees within 50m of the affected tree it is recommended you also spray those trees.
What countries have processionary caterpillars?
Ordinarily kept in check by local predators, their recent global warming-induced migration to northern European countries such as the Netherlands and Germany has led populations to spiral into the millions, where they go untouched by birds.
What do you do with oak processionary moths?
If you see any oak processionary moths or caterpillars, you should report them immediately to the:
- Forestry Commission using the Tree Alert online pest reporting form.
- Parks Management Team – for any sightings in the Borough’s parks and open spaces at [email protected].
Is an oak moth caterpillar poisonous?
People living in London and the South East are being warned to look out for toxic Oak Processionary Moth (OPM) caterpillars. These caterpillars can cause eye irritation, skin rashes and vomiting, as well as possibly triggering extreme, and possibly fatal, asthma attacks.
How do I keep caterpillars off my tree?
If you have an infestation of caterpillars, you can use a dormant oil spray on susceptible trees in late winter to smother the eggs before they hatch in early spring. Dormant oils are thick oils used mainly on fruit trees to control overwintering eggs, mites, scales, and other insects.
How do I get rid of oak tree caterpillars?
Simple Tips to Get Rid of Caterpillars in Your Oak Tree
- Attract Natural Predators Like Birds to Your Oak Tree.
- Add Duct Tape to The Trunk of Your Oak Tree.
- Plant Caterpillar Repellent Plants Near Your Oak Tree.
- Make a Garlic and Hot Pepper Caterpillar Insecticide.
- Spray The Oak Tree With Dish Soap and Water.
Do birds eat processionary caterpillars?
The species is controlled to some extent by predators, parasites and viruses which attack the moth at many stages of its life cycle. For example, eggs are eaten by the orthopteran Ephippiger ephippiger, while larvae are eaten by birds such as great tit (Parus major) and great spotted cuckoo (Clamator glandarius).