Creepy crawlies may look cute, but they can really hurt our local trees and we need to watch out for them. Trees can also catch diseases that make them poorly.
Starry Sky (Asian Longhorn) Beetle
This beetle is black with white spots. It likes to eat lots of different types of trees. It was seen in England 6 years ago but all infected trees were cut down and it hasn’t been seen since. Keep a look out for it!
If this beetle is living in the trees near you, you will see small (1 cm wide) holes in the trunk of the tree and sandy piles a the bottom of the tree (beetle poo). You might also see areas where the bark has been scratched off.
Trees around the infected tree will need to be cut down, but this will stop the beetles spreading to lots of other trees in the area and across the country. If you think you’ve seen one of these beetles, tell your parents and ask them to report it straight away. Click here for more information on this beetle.
Bird Cherry Ermine
These moths are white with black spots. They do well in warm Summers and are common this year. They have been seen in England and Scotland. The caterpillars of these moths only eat bird cherry trees. The caterpillars make the trees look like ghosts, as they spin a white web over the whole tree and eat all of the tree’s leaves.
The caterpillars do not kill the tree and the leaves grow back when they have turned into moths. These caterpillars are also not dangerous to you or your pets, and should not be confused with the horse chestnut leaf miner caterpillars.
Emerald Ash Borer
These little beetles haven’t been seen in the UK yet, but have killed a lot of ash trees in other countries. They like to make holes in the bark of ash trees and tunnel into the tree. Once they’ve found a tree they like, the tree will die 2–3 years after the beetles arrive.
Trees with yellowing or sparse leaves might be infected with these beetles. Also, woodpeckers are often be seen on infected trees, as they like to eat these beetles.
If you think you’ve seen one of these beetles, tell your parents and ask them to report it straight away. More information on these beetles can be found on the Woodland Trust website.
Red Band Needle Blight
This tree blight (or disease) is caused by a fungus (like a mushroom). Red band needle blight targets pines and conifer trees. Once trees become infected, they lose more and more needles every year and eventually these trees will die.
This tree disease is found across the UK and affects more pine trees than conifers. Be careful if you think you see signs of infected trees. The fungus can be spread to new areas by the wind but also on your clothing or shoes! You don’t have to notify anyone of the diseased trees, although it would would be helpful to stop other trees becoming infected.
More information on this tree disease can be found on the Forestry Commission website.