How/what would you use instead of mulch in flower beds?

Kim Donna
by Kim Donna

I have a flower bed on a slope with several hostas, couple of ferns, a hydrangea, and a few small misc plants. Problem is my mulch keeps sliding over the borders and the weeds can get thick. It is not a flower bed I venture into during summer and early fall for various reasons. I am looking for ideas on ground cover, real or artificial, other than mulch.

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