Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Black Locust

horseball:

With larger trees, we worry about the large roots producing voids through the dam (and hence paths for water to seep through and degrade the dam) if the trees are killed.

I know Black Locust is a known rot-resistant wood - My ILs had all BL fence posts, and I have a few on my place - but I would still worry stumps & roots may rot worse than trunk wood. My Osage Orange fence posts, for example, will last for many decades, but the sapwood in the stumps disppaears much faster than the heartwood from either the stumps or the trunks.

I would suggest separate threads for your other concerns; it greatly increases their value as reference material for the next PM with that problem.