This Forum will close on Wednesday 27 March, 2024. Please refer to the announcement on the Discussions page for further detail.
Rudbeckia
Hi there
Can anyone tell me if Rudbeckia is invasive? I bought one from a wildlife garden centre for 50p, and reading about it afterwards, I have read that they can be quite invasive, and spread via rhizomes underground. So I am a little scared to plant it! i dont know which variety it is unfortunately.
I had the same question about teasel but that has been answered! Hope this Rudbeckia is the same thing, i.e. not invasive.
Thanks in advance.
0
Posts
I have never heard of Rudbeckia as being invasive.
Great, so I think this may be a case of don't believe everything I read.
I think it can be a bit of a spreader in some parts of the USA where it is a native, but it certainly doesn't fit the description of 'invasive' in the UK in my experience.
When looking online for information about a plant, I find it helpful to include 'UK' in the search terms,
e.g. < rudbeckia uk > .
This way you'll get information applicable to UK condtitions rather than worldwid
e.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I can't get it to grow, the slugs just chew it up. Wish it was invasive!
Oh thank you DovefromAbove - yes I will be sure to add UK to my searches, I keep forgetting. It seems everything I look up is invasive in the US! Also I always get a bit worried when I see the word rhizome. This is because two big areas of thre garden were taken over by Japanese Anemone the last few years and we're still trying to clear it out..We found these big underground stems under the lawn, it was very scary and a lot of hard work to remove it all. Mind you, that ones IS listed as potentially invasive on RHS site. I am still learning what's what and how plants spread or don't.
Oh dear green fingered finch...sorry to hear that! It's a daily battle with the slugs isn't it? I've lost so many marigolds completely. I was hoping rudbeckia might be slug proof :-(
It's a prairie plant so loves lots of sun. In the uk, unless you have well drained soil and a decent summer (whatever one of those looks like), it can be hard to grow as a perennial. The only success I've had is to grow it into large plants in pots before planting out. Even then they gave a poor show in the second year then snuffed it over the next winter. Not my definition of invasive!
I've had at least 3 species of perennial rudbeckia plus those that are grown as annuals. I don't think I've got any now
I won't be getting more, There are more reliable yellow daisy flowers.
In the sticks near Peterborough
Which rudbeckia is that Mr J?
If you'd posted that for ID I would have said helianthus.
In the sticks near Peterborough
Our R. Herbstonne seems reliably perennial and vigorous enough to beat the slug damage, plus not invasive. I also grow R. marmalade as an annual and I start that off in the greenhouse as its more slow growing and it gives it a better chance against the slugs. Marmalade has a much richer, golden colour and I prefer it to Herbstonne but it's a faff getting it going from seed each year.