British gardeners are being warned to look out for a pest that becomes active in June and is “toxic” for many common plants. Gardeners have been working hard throughout spring to grow their most colourful flowers and get their outdoor space in top shape for summer. Pests are one of the main difficulties faced by British gardeners, and when a problem with these invaders arises, it can cause serious problems in your garden.
Experts have warned of a “toxic” pest that British gardeners need to be aware of. Ecologists at Arbtech.co.uk have issued a warning about oak processionary caterpillars, which they say are most active between the months of June and August when many common garden flowers are in full bloom. Not only can they cause problems in your garden, but these insects can cause rashes, sore throats and breathing issues in humans and can result in vet visits for dogs.
These caterpillars are already a known issue in parts of London and the South East but experts say that their range is growing and they may become more common in other parts of the country. “The risk is highest during early summer when their toxic nests appear on oak trees in woodland and public spaces,” a report says.
These creatures move in distinctive nose-to-tail lines and build web-like nests. They are known to cause damage to oak trees by stripping them of their leaves which can leave them vulnerable to draught, other pests and disease.
They pose a threat to humans as their hairs contain a toxin that can trigger painful skin rashes, eye irritation, sore throats and even breathing problems. If gardeners spot one of these caterpillar nests in public spaces, they are asked to report it to the Forestry Commission and should avoid the area.
“People often assume caterpillars are harmless, but oak processionary caterpillars do pose a real danger, especially to pets and young children,” they experts revealed.
“Their toxic hairs can cause serious irritation or allergic reactions, and in some cases, dogs can end up needing emergency treatment after contact or ingestion. The caterpillars are most active in early summer, so it’s really important for families to be aware of the risks when spending time outdoors – particularly if you live near oak trees.
“To stay safe, we recommend avoiding oak trees where caterpillar activity is visible, keeping dogs on a lead in woodland areas during the summer months, and never touching the caterpillars or their nests – even if they look inactive or dead. If you think you or your pet may have come into contact with them, it’s important to seek medical or veterinary advice straight away.”