Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Black Locust

horseball:

If the trees are on the dam itself and over 4" or so in diameter, it is generally recommended to trim them (to reduce their sail area and lower the risk of them blowing over) and leave them in place, unless the dam is goin gto be reworked (dirt-wise) to completely remove the stumps.

I had to deal with Black Locust at my In-Laws' place. You didn't mention those fun thorns, IIRC.