Edging for bark mulch
For those whose shrub beds are mulched with bark or other organic material, do you recommend putting an edging of some sort around the perimeter? I see many professionally installed jobs that do not use an edging for bark, etc. but I'm concerned that the zoysia grass runners will continually invade the beds.
I understand that an edging for stone mulch is pretty mandatory, but what about bark? Anyone have a metal (or some other) edging - other than curbing and glad that they did it? Or wish they hadn't?
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