In 2010, goats were used to keep weeds under control at the Boulder Reservoir.

Mulch around them with shredded bark or similar bulky material to keep weeds down.

Mulches do help to keep weeds down - to a point.

Keep pulling weeds, or their seed will bedevil you in spring.

A plastic cover is placed over the topsoil to keep weeds to a minimum.

Make sure you water directly by the plant's stem and not the whole of the bare soil, to keep weeds in check.

They reduce the amount of lawn to mow, and they keep weeds out.

They help to keep weeds at bay, and they improve the soil's texture.

New lawns need consistent moisture to build the thick web of roots that keep weeds under control.

It seemed even the Vatican could not keep such weeds from taking root in their soil.