Will deep mulch cause rot?

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I hate weeds and more so I hate weeding.  
I Have pulled up the black plastic sheeting this summer, after 2 years, to reveal a beautiful blank canvas all those dandy-lions are completely gone in what was supposed to be a lawn.    Not using it for a new lawn but are planting it up with whatever we can find, lavender, rosemary, geranium and blackcurrent bush.  
Have been shredding the privet hedge and making lots of shreddings.  Decided to pour the shreddings around the blackcurrent bushes 6 - 8 inches deep.  To try to stop the weeds.  OH is concerned the blackcurrent bushes will rot.  I don't think they will.  

-taff

They shouldn't but if he's worried, just clear them around the base.

[Deleted User]

Agree, don't push mulch's right up to the stems of plants.

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Will do, thanks

Davesnave

The problem with using fresh woody material as mulch is that it robs the soil of nitrogen as it decomposes, which can lead to plants' leaves being starved and turning yellow. I see this every year when the woodchips & sawdust from my log-cutting activities affects the grass where I worked....so I move the saw horse around a lot.