Posted: 09/07/2013 at 14:07
When I was young and still full of optimism about life in general and gardening in particular I bought a house with mare's tail in the garden. In those days you could buy sodium chlorate by the bucketful and it was used to keep drives permanently clear of any form of plant life. It killed everything stone dead except the mare's tail. Someone suggested concreting the drive and paving the garden. After months of cutting it, poisoning it and cursing it I did that. Five years later I thought "it must be dead by now" and took up one of the paving slabs. There it was, coiled round like miles of electricity cable, waiting for its chance to grow again.
An old coal miner neighbour told me that they sometimes found the roots 50 feet or more below ground.
You'll control it but you'll never beat it!