Thanks https://www.houzz.co.uk/user/gardengal48 I was trying to find this sort of information on the web when this 'article' (which appears not really as a post but as if Houzz had had it authored) came up. Something like 3rd in my organic search and one of very few which actually addressed the topic. I would think that the Taxonomists removed plants and gave them new new names to imply that they are more closely related to each other than the rest of the Dicentra. What upsets a lot of amateurs and even professional Gardeners and Horticulturists is that the only plant they knew as Dicentra was amongst those removed. I wonder how it would have been if they had removed all but Dicentra spectabilis and re-named those instead? Dicentra formosa is in fact a more garden worthy plant in my opinion because it flowers much longer and does not need support.

Heruga, You’re nice to help the residents, they must appreciate that! I purchased 3 more dicentra ‘alba’ this year, they have lovely pure white flowers. I also love the dicentra ‘valentine’ on which the flowers tend toward red rather than the clear pink. All are lovely! I have a golden foliage one, very pretty but it catches my eye, making me feel like it’s fall all summer long. (Our main fall color is gold). My problem isn’t that the dicentra turn brown (due to my cool climate, they stay green), rather they get terribly floppy and that’s why I’m moving them to deeper shade, we don’t have maples but lots of birch. i like calling them lady’s locket, doubt I’ll ever get used to lamprocapnos

Since they're hardy perennials you could sow them now in a pot and set outside with some protection from animals. If they're viable they should sprout in the spring.

I don't have much luck with t.speciosum, GG, although I have grown a couple of other tuberous tropaeolum. Like meconopsis grandiflora et al, they seem to thrive in a peaty, acidic, moist soil with cool summers (so Scotland and the NWUK). I have a t..ciliatum currently not doing much at all (hoping to set it free to cover our shipping container, along with the largest of my ramblers). Am pretty certain I have tried t.azureum with zero success, but t.tricolour are easy in a pot and fun for winter colour. I have planted plenty for customers but dicentra (or lamprocapnos never really did much for me...in terms of thriving or aesthetics, probably because I have been able to maintain a degree of shade denial. I never really got those corydalis with pink flowers...or those tuberous blue ones. I quite like ochraleuca as an easy going filler and I like our native purple ramping fumitory (purpurea) although it doesn't seem as common as it used to be.There is a horrible climbing version which always makes me feel a bit queasy - . ceratocapnos.claviculata - sometimes reminds me uneasily of bunches of vine weevil larvae