G'day Barry

I guess Glyphosate, but it seems a shame to kill them......suppose
that's your only option if they are a pest though!

What colour are they? I was always told that Tiger's were Orange and the
similar pink ones were called something else.....that theory could be
completely wrong too!! Will have to check my books. They are
beautiful blooms.

Bronwyn ;-)

Barry Ward wrote:
I have a large area which is covered with what I would call "Tiger Lillies".
They grow from some kind of underground rhizome and are a bit like bamboo,
in the way that they spread.

Cutting them down only causes them to reshoot with increased vigour - the
ground is hard clay, so digging them is not an option.

Poison??

Thanks for any help

Barry