What's the plant you regret putting in?

[BarrelOfOtters]

betony Great for wildlife it said, good for dry places....didn't mention it spreads like buggery and it a pain to dig out..not impossible but spreads under ground. Completely unsuited for my small front border....

There's also a rather lovely ceonothus that is rather too big for the spot by the greenhouse door and is making encroachments ....

Asters. Little rampant spreading thugs - taking over.

Need to dig the buggers out but they are right in the middle of everything else. Instead I just grab and pull up handfuls of roots each spring to try and contain them.

Lamium galeobdolon (archangel). Pretty but spreads at a mile a minute, although at least it’s easy to pull out.

Budleia - even dwarf varieties grow huge and spread. Horrible things.

I regret my neighbour planting bamboo, now invading my garden!!!

Sounds like the perfect thing for my garden!!

I didn't plant them but I wish the previous owners hadn't planted Montbretia/Crocosmia or Pendulous Sedge.
Both thugs that you can't get rid of.

Don't ever plant Green Alkanet as the tiny hairs stick into your fingers and irritate for weeks.

Odd.

Mine hasn't.

Then again I chop it every year in late spring.

Japanese Anemones. Tap roots down to New Zealand. Never grow where I want them. Great if you have space to fill but...

And Acanthus. Ditto.

Vinca. Fucking vinca.

I have a love hate relationship with vinca. For about five minutes it looks really nice with the wee flowers peaking through whatever else it's growing through. Then for the rest of the summer it just looks like a monstrous spread of green that swallows everything else on the ground.

I pulled up all my Lamium in a frenzy after I saw it was wiping out all its neighbour plants.

Did the same for Vinca but the Vinca cannot be eradicated and comes back over and over. Ah well, it’s pretty at least.

Hydrangea Annabelle are a bit disappointing as their heads are too big and the stems droop or even break. Apparently there is now an Annabelle Strong variety to sort this, but seems wasteful to pull up large established plants and replace.

Japanese anemone. 70% of the year they’re just these enormous leaves that block other plants and provide a great snail hiding place. Then flowers for a few weeks, then brown dying petals everywhere.

<grump>

A rose bush that takes over everything but only flowers for maybe 2 weeks a year. Has thousands of painful tiny razor like thorns that stick whenever you are within a meter of it. I would absolutely dig it out except it’s in a tiny gravel border with paving slabs my side my neighbours fence the other. No angle to get a spade in. I shall probably take an axe to it i

Mouse tail plant, harder to get rid of than real mice infestations.

@BarrelOfOtters I'm surprised your betony is spreading, mine is very well behaved - just grows into a neat clump and flowers amazingly. The bees love it too. Only real problem is that grass gets into the middle of it and is hard to weed out.

Our previous owners (or more likely their predecessor as the POs did nothing with the 0.5 acre) also planted pendulous sedge and it comes up everywhere. Bloody awful stuff.

Ditto laurel 'hedging' which somebody planted along vast swathes of our boundaries at some point in the past. Much of it has now grown into large trees which we've been gradually removing. I hate the stuff passionately.

The plants I regret us planting are those which haven't thrived...and those are many.

Sweet Woodruff.

Dh got some English lavender which is too purple, I only like light coloured French lavender

A couple of Hebes which died

Mint.

In the ground. Dumbest idea I ever had

Purple toadflax - self seeds everywhere but the bees love it so much I struggle to bring myself to get rid

Bastard laurels that grow six feet when you turn your back. The mint that has broken up the patio. Pendulous sedge - thanks MiL.

Diosma Pink Fountain. Compact, 30-40 cm spread they said. Currently about five foot across and four feet high. Lovely but way too big for my tiny garden.

I’ve since seen the same species of plant towering above me on Tresco.

I was thinking about getting buddleia as butterflies love it, maybe i will plant it in a pot!
i have montbretia, its done rubbish this year, only a few green leaves but it is also in a pot so cant spread
chinese lantern is lovely but goes everywhere, as is seedum which took over my rockery after the wind blew the pot over but actually makes it look more natural.

Woodruff. Great for dry shade under trees.
Spreads and spreads
Forms a matted root system that resists spades and forks.
Got a burly man to dig it out with a pickaxe.
Three years later I am STILL pulling out woodruff seedlings, not from root remnants - nowhere near the mother plant!

Bamboo. Grows quickly, spreads fast and is now popping up on the middle of the lawn. I'm now having to dig deep and remove it all.

Nepeta 'Six Hills Giant'. I did not realise how BIG it would get so fast. You have to keep on top of it.