The trouble is it has thin stems, it's not like helianthus for instance, so it collapses over supports and in gaps between other plants. Shrubs or some sort of suckering thicket might be the answer for support. Or a weekly Chelsea chop for a couple of months if you can cope with its invasiveness. Here's the one stem I left as it was growing through climbing hydrangea on the wall. I had to look up to get the photo as it is 6 feet high. Hard to believe it's related to the modest bedding bidens.
It's a pity, because it would be a useful plant in many sites. Quite 'cosmos-y' and great for mingling nicely with lots of colours. I think I'll give it a miss
It's a place where beautiful isn't enough of a word....
I live in west central Scotland - not where that photo is...
My friend who grows it in a large border opens her garden for the NGS. Late summer it does look good at the back of the border due to it's subtle colour. Calms the reds and golds of autumn in a lovely way. Always some on the plant stall and people love it but.....
I have worked as a Gardener for 24 years. My latest garden is a new build garden on heavy clay.
Interesting to see how tenacious and high your bidens grows @Woodgreen after you've tried digging it all out! I've now dug the three plants out and thought I would just post some pictures of the roots in case anyone's interested. It's amazing how much root growth there is after only 3 and a half months, and there were quite a few new shoots coming up off those roots too. I think it would have ended up very quickly taking over the roses and anything else I planted there. And the roots just snap off so I've probably not got them all. Guess that means the ones I've missed digging up might start sprouting up at some point in the future. Such a pretty plant though.
I think I've only seen the hanging basket versions of bidens, where they're supposed to flop/trail. Perhaps those big ones are best suited to a large space where they can weave through other sturdier plants.
Doncaster, South Yorkshire. Soil type: sandy, well-drained
I'm relieved for your sake that you've dug them up from near your roses @FiddlingOn. You may have somewhere more convenient for them, but it would have been a pity if they'd threaded all through the roots of your roses, as then it would have been difficult to control the bidens without damaging the roses and getting prickled yourself. Last year I kept pulling up or snipping off the emerging shoots from among the peony, the hydrangea roots and other plants around, where I simply cannot dig. This year after the heatwaves there was a lot of rain here (still is 🙁) and like a lot of plants after the dry spell ended, they surged ahead fast. That one shoot was hidden and didn't get the chop! But the regrowth in that area is as strong as ever I'm afraid so next year it will have to be weedkiller. I hope you enjoy your 'Chando Beauty' roses next year.
@FiddlingOn You would think looking at your hard work that you have got it all. As you say it will probably be back next year. I think what you may find is an outer circle of tiny plants further out from the main root. I still like it but accept it is not to be recommended unless you have the space.
I have worked as a Gardener for 24 years. My latest garden is a new build garden on heavy clay.
Well @Woodgreen and @GardenerSuze, after I posted those photos I started digging around to put in my tulips and discovered loads more roots further down and around. It's a bit of a job pulling them out because they just snap so there must be loads more buried that I couldn't get to. Unfortunately they seem to have gone under one of the roses. Oo dear.
You can only do your best, and then be ruthless next year if anything emerges. I'm glad for your sake that you posted your query. Hopefully any tiny bits won't re-grow. As you mentioned earlier they run and then send up shoots from the running roots. If you manage to get these you might be okay. Good luck.
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Here's the one stem I left as it was growing through climbing hydrangea on the wall. I had to look up to get the photo as it is 6 feet high.
Hard to believe it's related to the modest bedding bidens.
I think I'll give it a miss
I live in west central Scotland - not where that photo is...
You may have somewhere more convenient for them, but it would have been a pity if they'd threaded all through the roots of your roses, as then it would have been difficult to control the bidens without damaging the roses and getting prickled yourself.
Last year I kept pulling up or snipping off the emerging shoots from among the peony, the hydrangea roots and other plants around, where I simply cannot dig.
This year after the heatwaves there was a lot of rain here (still is 🙁) and like a lot of plants after the dry spell ended, they surged ahead fast. That one shoot was hidden and didn't get the chop! But the regrowth in that area is as strong as ever I'm afraid so next year it will have to be weedkiller.
I hope you enjoy your 'Chando Beauty' roses next year.
Hopefully any tiny bits won't re-grow. As you mentioned earlier they run and then send up shoots from the running roots. If you manage to get these you might be okay. Good luck.