(~es, ~ing, ~ed)
1.
A ~ is a layer of something such as old leaves, small pieces of wood or manure which you put on the soil round plants in order to protect them and help them to grow.
N-MASS
2.
To ~ plants means to put a ~ round them to protect them and help them to grow.
In May, ~ the bed with garden compost.
VERB: V n with n, also V n