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Splitting, dividing and moving plants?

in Plants
With lockdown I now have time to spend time in the garden, if only they had done it a month ago
However, the weather is pretty good at the moment so I am hoping it will still be possible. This is the list of plants I would like to move and/or split, please can anyone advise me if they have a chance of success or should I wait until spring. As ever thank you for any advice.
1) Geums (Mrs Bradburn/Totally Tangerine)
2) Phlox - I don't know which ones but they are giant, taller than me, white and the clump is at least a metre across.
3) Asters, large autumn flowering
4) Hostas
5) Hellebores
6) Ornamental grass (tall striped/variegated, not zebra grass, the stripes are vertical)
7) Hardy Fushia (still in flower)
8) Kniphofia
9) Sedum (Hylotelephium) Tall pink/red variety still in flower but very much wrong place)
10) Cordyline

1) Geums (Mrs Bradburn/Totally Tangerine)
2) Phlox - I don't know which ones but they are giant, taller than me, white and the clump is at least a metre across.
3) Asters, large autumn flowering
4) Hostas
5) Hellebores
6) Ornamental grass (tall striped/variegated, not zebra grass, the stripes are vertical)
7) Hardy Fushia (still in flower)
8) Kniphofia
9) Sedum (Hylotelephium) Tall pink/red variety still in flower but very much wrong place)
10) Cordyline
- “Coffee. Garden. Coffee. Does a good morning need anything else?” —Betsy Cañas Garmon
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Hostas can be done any time really, although some people leave them till spring.
Hardy fuchsias wouldn't be divided- that would be cuttings for those.
Sedums - any time, and you can pull bits off those to make new plants too, although it might be a bit slow just now. [maybe not where you are though
Kniphofia - can be done now. Geums and Asters too, assuming they have good conditions to go into.
Hellebores - I've moved them in autumn but not split them, but I don't see why not, although you'd affect the flowering. I'm assuming it's the usual ones and not niger.
I don't grow Phlox, but I expect that would be ok, and I don't grow Cordylines. I wouldn't have thought you could divide those though.
All the perennials are best done when they've died back though. Easier when they're dormant.
I live in west central Scotland - not where that photo is...
I live in west central Scotland - not where that photo is...
Cordyline l wold be inclined to wait until the Spring.
They'll get loads of light thru winter as the albizia sheds its leaves and then appreciate dappled shade in the height of summer.