How bad of an infestation is too bad? I live in Zone 4b in Wyoming. I have several aspens in my yard, and 3 have scale surrounding their trunks and continuing upward about 5-8 feet or so. Some lower leaves have some stickiness and blackish mold, just as described here in your article. The local tree service says that chemicals are the only treatment, and that it has be done yearly for the life of the tree, and may not yield results even then. As there's been no noticeable decrease in the scale over the last 5 years of treatments since we moved into this house, I'm no longer convinced that this is likely to yield positive results. Would you suggest trying some of the suggestions you've made in this article, or do you think they're too far gone? If you think they're too far gone, how likely do you think it would be for the male scale insects to travel to the other aspens nearby? Might they be more likely to travel during certain times of the year than others? Thanks!
How bad of an infestation is too bad? I live in Zone 4b in Wyoming. I have several aspens in my yard, and 3 have scale surrounding their trunks and continuing upward about 5-8 feet or so. Some lower leaves have some stickiness and blackish mold, just as described here in your article. The local tree service says that chemicals are the only treatment, and that it has be done yearly for the life of the tree, and may not yield results even then. As there's been no noticeable decrease in the scale over the last 5 years of treatments since we moved into this house, I'm no longer convinced that this is likely to yield positive results. Would you suggest trying some of the suggestions you've made in this article, or do you think they're too far gone? If you think they're too far gone, how likely do you think it would be for the male scale insects to travel to the other aspens nearby? Might they be more likely to travel during certain times of the year than others? Thanks!