Need to remove our oleander (no surprise). Hedge is on the property line. Neighbors want the stumps dug out, say it's the only way to ensure no resprouting and to give anything we plant there a chance. But it's a lot cheaper to grind the stumps, and since they can grind a foot or more under the surface it seems to me that that'd be enough. Thoughts? FYI, this is a 60+ year old hedge, so the trunks at ground level are massive.

Related question - what is it about oleander that kills other vegetation (e.g., why does nothing grow under it)? Is it something in the roots, the leaves, etc.? I'm wondering partly because the answer may affect what and when we can plant a replacement. But I'm also curious about some bad luck I've had with some potted plants and a planter bed near the oleander, and I wonder if it's the leaves falling on (and decomposing in) the soil.

Thanks!

They MIGHT resprout, but the tender new shoots are susceptible to glyphosate. Just spray any you see, as soon as you see them.

I think the effect on other plants is because they cast dense shade, and their root systems effectively monopolize the water. And the leaves are thick enough to act as weed-preventive. I get some weeds growing under the oleanders where it's sunny, have a Lady Banks' Rose growing next to the oleanders (talk about a battle of the titans), and I've seen hedges with lawn running up to the base of the plants, so there is probably no toxin being given off.