What matters is the structure of the material.

sheet mulch with cardboard around trees Mar 01, Sheet mulching steps. There are five steps involved, four active and one inactive:Cut your lawn as low as possible;Cover it with cardboard;Dampen the cardboard;Add 4 to 6 inches of mulch; and.Wait until fall to bushleaning.barted Reading Time: 6 mins. Before installing a sheet mulching system around your existing trees, remove or cut back any weeds or woody plants.

Then, add your sheet mulching materials.

Are there toxic chemicals in shredded cardboard, in glue, ink pigments or paper itself?

Add fertilizers and amendments extending. Oct 06, Cover the cardboard and compost layers with your choice of organic mulch, such as shredded bark or wood chips, using just enough to conceal the cardboard or up to 3 inches of mulch.

Use 3 inches of. Aug 08, Yes, cardboard sheet mulch kills off perennial roots, but that is only a symptom of the damage its use inflicts on all soil biology. In fact the invertebrates are able to recolonize the cardboard wastelands relatively quickly; it is the complex soil biology that takes years to restore bushleaning.barted Reading Time: 5 mins.