There is a thin line between an endearingly vigorous plant and a herbicidal maniac. Last year I made a new border in the bottom garden; it wasn’t “designed” as such, it was one of those spur of the moment “let’s just do it” events that quite often happen in my world. So the bed was dug out, prepared well and planted with bits and bobs we had knocking about the place. Although extremely exposed, it is a sunny (relatively speaking) part of the garden and well-drained. In went a small amelanchier grown from seed, penstemon, achillea, helianthemum, marigolds, doronicum, all of which had a pleasant summer, settling in nicely enjoying both the fine weather and the ample rain. Some it would seem made themselves a little more at home than others. It came to light today that Achillea “Cerise Queen” had been quietly intent on world domination, stealthily sending out her tentacles to envelope everything in her path. She was very well-behaved in the top garden, I am not sure quite what has come over her. So what started as a straightforward spring tidy of this area became a major overhaul as I attempted to remove as much of her offspring as I could (I am not naive enough to believe she will not reappear again before the year is out) which had weaved through and under neighbouring lavender and penstemon. She was banished to an area where she can do her worst without the risk of upsetting anyone, the offending runners were laid out on the paving to bake before I dare compost them.