Viewing post #655882 by passiflora

rocklady said:

Or if you have a heavy rain, your hole can get filled up. But I would do it because I would step in it, no matter how careful I was. I just wish I had a neighbor like yours!

That is the main reason. Plus you put the soil back in and it doesn't wash away.

And it keeps nearby roots out, and when you remove there can be a hole exactly the size of the container of the plant you intend to put there.