One or two ramets of each willow genotype were randomly placed in an open-ended greenhouse covered with 30% shade cloth (aphid-resistance experiment), and the rest of the ramets per willow ...

Question: Weeping willow, six years old and 9″ diameter. Wet, clay ground and thriving. Late last summer, I noticed the leaves were dead suddenly, and the bark on the trunk was ... There are many ...

One summer, I saw several giant willow aphids on the bark of that pussy willow. They were gray, with several black dots. Aphids of all kinds suck sap from many kinds of plants, damaging some of them.

4. Large willow bark aphid (Tuberolachnus salignus) This supersized aphid - related to greenfly and blackfly - is about half a centimetre in length and is often mistaken for a beetle or spider ...

Most experts agree that the current problem is the work of aphids. Jed Day, Houston district manager of Davey Tree Expert Co., says he's finding giant bark aphids on clients' trees. These large ...

SUP270421NADwasps4.JPG The target pest; giant willow aphids which feed on willows in large numbers producing a sticky honeydew. The insects can damage – or even kill – infested trees.

Mary Ryan, Co Waterford They are giant willow aphids – Tuberolachnus salignus ... It can form dense colonies on willow bark during the summer and autumn. What the crawling legions were hoping ...