I have three lovely lupin plants in my garden. However, for the past couple of years they have become covered with a horrible mass of tiny white creatures that look like miniature grubs. The cause the leaves etc to go brown and curl up and die. I have sprayed with a number of bug killers but it kills them for a few days when they reappear again all up and down the stalks. They are horrid, Despite repeatedly spraying the plants as I say they reappear and I do not know what they are or how to get rid of them permanently. I do not even know what insect lays them in the first place. None other of my plants is affected. I should be most grateful for any advice please.
- 21 Sep, 2010