In article , Emrys Davies
writes

"Ellen Connell" ] wrote

The easiest way to get rid of it?

Prise it gently with a trowel and remove every morsel of root as you go.
The more gentle and thorough the greater the success.

I agree with you, Emrys. I did that in a large garden once.
It took ages - but it did the trick.
Trouble is ISTR the roots are dark in colour and rather difficult to see
in the soil.
--
Chris