Where in the UK is Verbena bonariensis hardy?

hardyi s varibal. one winer kaput, the next ok. minus 6 one winte rok, minus 2 a nother winter,dead. microclimate to in garden, a closeby rock or evergreen. to many varibles. goodluck tho

It doesn't do well here Spritz :(
I'm lucky if it comes up a second year, and it never seeds itself....I'm on clay, in Cheshire....

I'm on clay in West London - seeds all over and still got the same plants I had originally - but I have noticed occasionally one or two keel over, but there are so many seedlings. Got a garden up in Ealing, clay so bad you could make pots with it, have to dig out huge clumps every spring - millions of seedlings all growing away, every year.

Guess it must be a difference in climate then, Bamboo?

Seeds itself and goes through winter here in West Sussex.
Penny

grows fine in east yorkshire too. some are 4 yrs old and very woody. always get self sown seedlings too. noticed some in the pavement down the road. from my garden too. very proud. :o)

Ditto, Seaburn - noticed they were growing in the cracks of the pavement up in Ealing, 2 houses away!
Crazydi, it might be that you're out there with the hoe or weeding in the spring and don't recognise the seedlings for what they are? Is that possible?

Survives here in east sussex but it never seems to reseeds itself. I read this year that the crowns should be protected over winter so I am going to try that this year.

My mum has several that seed around in SE Northumberland about five miles inland from the sea. They mostly come through the winter fine with just the odd one one succumbing. Twenty years ago or more, I suspect none would have survived at all, the winters here are very mild (at least on the coastal strip). It may well be a different story much further inland.

An aunt that lives further south in Birmingham (Perton, near Wolverhampton to be exact), struggles with some plants in winter that my mum gets away with as being in the centre of the country, their frosts can be that much more severe.

Grows well here, last winter killed most of our plants off.

does very well here in Devon, and seeds itself all over :D

I think it depends on your situation no not which part of the country ,but if your situation is one were frost can be traped or alouded to flow from your garden, if it is traped when the sun comes up the combenation is dedly to plants, and Crazydi' the sandstone clay in cheshire is brim full of nutreants, go on be selfish just this once get some moss peat in to it, cheshire is one of the most productive parts of the country, and I am a Flintshire man.

Does well for me here in Northern Ireland and self-seeds readily.....love it...:>)

So it appears that it thrives all over the country, then! That's interesting - thanks for your replies!

Mine seed themselves all over the place - I managed to pot up and grow on 15 plants this summer. :-))

I think my problem is the height - 630ft above sea level, so definitely not a frost pocket, lol. I do get a fair number of seedlings though, lift them, pot them up and grow them on for the next year. Wish the cold would kill the slugs!

Or my large variety and population of snails! LOL.

I agree with Cliffo on this :) It's "situation" that counts. Where I am it's very low lying, and I'm surrounded by weirs, rivers and canals. The R. Mersey runs down the bottom of our road, and the Manchester Ship Canal is two minutes away. It's the winter wet that finishes off plants here, rather than the cold (though we can get hard frosts as well!) A lot of plants can't cope with prolonged wet weather...it can be sunny in other parts of Cheshire, and be raining here. Verbenas and anything requiring good drainage do not do well here....:((

It's so often the cold wet that finishes plants off, I totally agree.

Last 'summer' in the constant cold rain, I lost six new Osteospermum because their roots rotted!

Crazydi' I know the arear were you live' there is a lovly park not far from you which I have viseted meny times and had a drink in the pub on the edge of it, plenty of leafmold? I simperthise with the damp and yes that is a big problem, but I have to point out to Wagger that I have seen it growing in gardens on the side of snowden,so don't give up.

I won't Cliffo. :<)

Like sot be weel drained i find, but then it seeds everywhere in any soil. Suppose self seeders only live as they are happy where thay have landed. Grow loads in the garden in rural Bedfordshire. Lose a few but i find them easy to grow and they flower same year from early sowings, so i just sow a load in groups in greenhouse in late february (bit of heat) and then plant out ready for flowering in a few months time.

Thy do beter on gravel- suppose its free draining enough for them to get through went winters