gotten huge and every year drop their dark blue berries during February and then later on drop their tiny white snow-like flowers all over the patio and into the pond fouling my filtration, staining my patio, etc. Of course the birds love the berries but as they eat, they "recycle" so the blobs of digested berries are all over my patio daily - have to be hosed off and the stains are very difficult to remove. This year has been the worst yet. Last year it was blackbirds but this year it is giant robins - at least 200 at a time, dining and pooping all over the patio and into the pond, stream and surrounding rocks etc not to mention my patio furniture which I've had to cover with a tarp. I talked with a tree "surgeon" a couple of days ago and he is going to take the trees out for me - YAY! I'm not usually one who wants to kill trees, but red tips are not only a nuisance, they are also invasive - I have little ones and some not so little coming up all over the place. Here are some pics of what they do to my patio. The rain we've had has actually washed away much of the bird poop. Hosing and blowing the berries off the patio have been daily chores for a few weeks, not to mention filter cleaning.
Any suggestions on how to kill the root system would be welcome and helpful. The tree guy said to paint concentrated Roundup onto the cut stump so the cambium layer can take it down to the roots to kill them. Sounds good and I'm going to try it as well as drilling holes into which I'll pour salt. Any other ideas? Thanks