Rudbeckia,hardyfuchsia,penstemmon,coreopsis

also japanes anenome, osteospermum and the annuals cosmos.pelargonium,begonias

also for august/september crocosmia,physotegia

Schizostylis will flower right up until December in milder parts of the country - check out Schizostylis coccinea 'Salome' on google - it's absolutely gorgeous.

Persicaria will flower from July through to November. Asters give wonderful autumn colour, and I agree with Rudbeckia, anenome and schizostylis. Cyclamen hedrofolium is also a great plant for shady woodland areas and can flower from now right through the winter. I also have a knifofia `bees lemon` (red hot poker) that is just coming into its best. Hope this gives you a few ideas.

Here's a fuller list( sory my computers playing up and it went offline before I could post this earlier)

Perennials

ageratum,centranthus chrysantthemum rubellium, coreopsis, crocosmia, echinacea pupurea,hardy fuchsia japanese anenome, liriope muscari,osteospermum penstemmon phloc paniculata, physalis francheti,, physostegia virginiana, scabioa caucasia, schizostylis coccinea,sedum spectabile, Rudbeckia, tradescantia virginiana

Annuals

cosmos.pelargonium,begonias,dahlia.calendula,,gazania,impatiens,petunia,salvia

Forgot the Gaillardia AM. :o)

Where are the shrubs in these lists? Hydrangea, caryopteris, ceratostigma, buddleja, clerodendrum, abelia, hibiscus, perovskia, lavender, potentilla, calluna, lespedeza, fuchsia, roses, clematis . . . Phil J

I think he was asking about flowers as in perennials, wasn't he ?

which of these can be planted now?

You can plant virtually all pot grown plants that have been grown outdoors any time when there is no frost in the ground however my preferred time for most things would be from now to early November or in early spring. Planting in late autumn means you are unlikely to need to water the plant/shrub for long if at all and it will settle in over winter and get away quickly in the spring