The damage these bugs do is minor, although unattractive. Never heard tell of such a thing. Agree that it's a ladybird larvae, one of the "good guys" in your garden....a keeper ?. Any ideas? Birch is also a good firewood and will burn when green, the bark is a great tinder and burns very hot. They are the Yellownecked caterpillar, often found on birch and other deciduous trees. I don't think it is a shield bug. Record the plants in your garden, share your photos, and make like-minded friends. It's almost certainly red spider mites, they look like rust on the underside of leaves – exactly as in the second photo. Nick. The leaves may drop prematurely from the tree, turn brown, turn yellow, shrivel up or become otherwise malformed. Birch leaf tea may also help treat edema and flush the kidneys. Chunks of leaves chewed down to the veins, browning leaves around the top of the tree canopy and leaves falling in summer. Spraying with Confidor or white oil will stop them. Bucculatricidae leaf-miners: . Several Coleophora case-bearer species: . It’s very common to see a Birch tree that has been stressed for a number of years be finished off by Bronze Birch Borers. Whatever this is, is causing the leaves to curl too. Archaeological research shows it has been used for at least 80,000 years: A spear point is extant with a Neanderthal thumb print in the tar. IF YOU LOOK AT THE DETAILS OF THE ORANGE LADYBIRD YOU WILL SEE THAT IT EATS MILDEW, THAT IS WHY IT IS THERE. Silver leaf is a fungal disease of the wood and leaves of some trees, especially plums, apples, apricots and cherries. I have never seen them before, we have had the trees for about 3 - 4 years in the garden. In birch trees, it causes defoliation when there is unusual cool and wet weather just when the … Dried brown to gray-green leaves hang on the tree or more commonly, foliage drops prematurely and litters the ground NO, THIS POOR INNOCENT BEASTIE IS NOT EATING YOUR TREE'S LEAVES. Could they be green shield bugs? They get their common name from the way that some species specialize in eating the stems of plants just above the soil line, causing healthy plants to topple over. Newly planted trees/shrubs need a good deep soaking at ground level at least once a week so they don't dry out. Birch leafminers are the larvae of tiny wasps called black sawflies. I don't think it is a shield bug. You probably have Japanese Beetles. I have never seen them before, we have had the trees for about 3 - 4 years in the garden. Can anyone help me with my 3 year old silver birch. Grows on You is a community for gardeners. Ladybirds eat the sap sucking aphids. Betula pendula is grown for its attractive, non-peeling bark, which is white and turns black over time, its flowers, which appear in April and May, and its reputation for attracting wildlife. Species which feed exclusively on Betula. United Kingdom. IF YOU SPRAY THE MILDEW YOU WILL DEPRIVE THE LADYBIRD OF ITS FOOD SOURCE, IT WILL THEN DIE AND, AS YOU CAN SEE FROM THE WEBSITE, ORANGE LADYBIRDS ARE RARE. Hi, I'v been growing silver beet forever and never had any problems other than snails occasionally. Thanks for your replies. Something is eating the leaves. Log in or register to join the conversation. IT IS THE IMMATURE FORM OF THE ORANGE LADYBIRD. Not snails or slugs and I have checked at night and nothing. Have a look on the RHS web site. Any ideas? You can, however, remove the branches that are infested and dispose of them. These 1 inch long, yellow-green bodied, black headed larvae, feed in groups along the leaf margins, eating their way to the center vein. Add another photo Silver birch provides food and habitat for more than 300 insect species – the leaves attracting aphids which provide food for ladybirds and other species further up the food chain. This damage can look serious but it is not. 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