How often should mulch be replaced?

#1
I totally redid our front landscape 2 or 3 years ago. Should I remove some of the top mulch and replace it this year? The color is still very good and I have no weeds coming through.
 

admin

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#2
If the mulch is too old, not a permanent, then you have to replace with the new one. You have said the current situation is good so wait for the day in applying new mulch. I hope you understood what I am saying.