Phalaris Arundinacea: 

 

Phalaris is a grass, not a pretty one, with indefinite spread via underground roots.

So some books say good for ground cover, absolutely true, but it will cover ALL the ground given half a chance. Don’t plant one in your garden!

We haven’t used this in any of our small garden designs – but we do use lots of other plants that are much better (we think).

Why don’t you take a look