Ligularia dentata, IF it is damp shade. They are fine with some sun, but need to be in damp or moist ground, they will keel over if they dry out. I grow them for the gorgeous foliage, large plates of olive & maroon leaves, but they send up spikes of bright yellow daisy like flowers in late summer Slugs love 'em tho'
For some late summer/early autumn colour try Rudbeckia fulgida var. Goldsturm which will be fine with four hours of sun. The flowers are a rich golden yellow which really stands out at a time when other perennials are fading. It also bulks up well, looks good with grasses and is popular with bees and other pollinators.
I don't have anything to add in the way of yellow-flowered perennials, but you could put some daffodils in between them for spring colour. Or yellow crocuses if you prefer the more orange-y egg-yolk yellow (to my eye they clash horribly with yellow daffs). Possibly also the yellow-variegated types of hostas. Their flowers would be white or mauve which go OK with yellow (to me) but they can be nipped off if you don't like them.
Doncaster, South Yorkshire. Soil type: sandy, well-drained
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They are fine with some sun, but need to be in damp or moist ground, they will keel over if they dry out.
I grow them for the gorgeous foliage, large plates of olive & maroon leaves, but they send up spikes of bright yellow daisy like flowers in late summer
Slugs love 'em tho'
Hmmm...I'm not a fan. There's something about them I just don't like....
Thank you. Very "sunshiny"
As a result it doesn't get so tall and is fine.
Very nice. Thank you.