I'm watching the hundreds black ash trees struggle against the emerald ash borer. They don't live more than 10? years at max though I wonder if that's true for

I'm watching the hundreds black ash trees struggle against the emerald ash borer. They don't live more than 10? years at max though I wonder if that's true for the new ones. But under the pressure of the borer they seed immensely. For every one tree that dies 20 spawn around it. I'm letting the field of them do their thing, hoping at minimum they maintain themselves in their stunted form as a population until we can introduce a resistant tree.