Once established, the plants also spread extensively by underground roots, an individual plant eventually forming a large patch.

Injure an underground root and a visible limb will express the wound.

And until we do so, fresh shoots of the same philosophy will continually arise from its underground roots.

The reason for this was to stay true to the genre's underground roots and to make the music sound more "raw" and "cold".

It reproduces by seeds and also by the very well developed underground roots.

We're trying to get pop kids involved in music with underground roots.

They have firm underground roots, and sometimes have tubers to help protect themselves against cold or snow.

But it, too, has a fine network of underground roots that fan out everywhere.

Fires made in non-prepared sites can cause underground roots to burn, allowing the fire to spread.

It has underground roots that push and spread.