Posted: 01/08/2012 at 14:26
Yellow loosestrife and a hardy-geranium which I think is cranesbill. Not too bad if they are in a large bed but the geranium has taken over a small island bed, covering all others, despite a fame thinning it out each year. Also,
Hypericum, asdlovelya shrubs but sends its roots all over my gravel garden and even penetrates the planting fabric.