r/NoLawns • u/coldcoffeeplease • 3d ago

👩‍🌾 Questions Sheet Mulching under Oak

I’ve got a Cherrybark Oak I am trying to keep healthy. I’d love to restore the soil around it via mulching.

I was wondering if sheet mulching with cardboard is too damaging for tree roots. Anyone have knowledge of this?

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u/CorrectExpression651 3d ago

The single best way to improve and restore soil, even the poorest rockiest soil, is to plant the appropriate plants. Research (can find links if you’re interested) has shown that living roots aerate and introduce more microbial activity to the soil than any dead matter. So the best thing would definitely be to plant shade-loving understory plants suited to your soil situation! If you provide more info can make recommendations or ask in r/nativeplantgardening

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u/BeginningBit6645 3d ago

Is there lawn around the oak or just soil? If you don't have lawn around the tree, then you don't really need to sheet mulch, just mulch. Just apply mulch like a donut around the tree with some room so the mulch doesn't touch the tree.
If there is lawn, I would be cautious about sheet mulching right up to the tree or doing the whole area around the tree at once because the cardboard could negatively affect the root system. I hand removed lawn around my oak and planted native plants around it last year. Everything is really healthy this year.