@Harrysmummy246
Sycamore seedlings, aquilegias (if they were more interesting colours, would let them be), Spanish bluebells, green alkanet, field bindweed, ivy, monbretia. Just about knocked the horse tails on the head now.
I have just removed 2 wheelbarrow loads of Spanish bluebells from the garden. I found myself thinking that it's a shame they're not edible, they look so like fat spring onions, or little leeks, I could have made a gallon of soup out of the buggers.
I have bought (amongst other things) a packet of Nigella seeds. How foolish am I? (I once saw a flowerbed with Nigella and Escholzia all mixed togther among other plants, and it looked really pretty).
My worst thug was the honeysuckle Halliana. It was such a brute that after it had taken over the back fence and the whole of one side of my garden, it developed serious thoughts of world domination and has been spotted 5 houses along in the houses that back onto mine, so it's in the next street. At least it's not mine any more, it's all gone from my garden.
My parents brought me a cutting of a very pretty variegated ivy called Goldheart. It behaved very nicely for years, then suddenly, one summer, it shot along a 10' flowerbed and up the wall of the house to first floor level.
On the same visit, they brought a phlomis they'd propagated from one in their garden. I quite liked it when it was about 3' tall, but it quickly got to 6' and just got fatter and fatter. The more I hacked it back, the more the bastard grew. It completely obscured the window at one end of the bay. To add injury to insult, I seem to be allergic to it and whenever I pruned it, I got a dreadful rash on my arms and sometimes on my face.
It was after I finally got rid of the phlomis that the Goldheart ivy took its place.
My neighbour thinks my clematis montana is a thug. It grows all over my garage roof and spreads into her garden. But I love it (it's the pink one, with bronze leaves), it's so pretty and smells fabulous,
We have herb robert, but it's manageable. The valerian, otoh, has made cracks in the drive and seems immortal.
My latest bugbear is goosegrass/sticky willy (or, my mate's name for its burrs, green stickums). Not only is it invasive, it bloody gives me an itchy rash, like the phlomis did.
Still, it makes a change from bindweed.