Can I get these plants to continue flowering...

[autumneve]

Geum (Totally Tangerine)
Lupin (Gallery series)
Ceanothus
Salvia (Caradonna)
Roses
Clematis...

I'm having my garden professionally photographed in two/three weeks but it seems to be 'at its best' now. Well, lupins and geums are just about going over.

If I cut off current flowers (as a sacrifice!) will the plant form buds now or wait until Autumn (if at all this year)?

Lupine and roses should, probably salvia too, not 100% certain on the others.

Clematis, no....

No to Ceanothus too.

I have that geum, definitely worth deadheading as it can keep going then, bit long winded as they have so many flowers but worth trying!

Lupine and roses should,

Not necessarily within 2-3 weeks for the lupin, and roses it will depend on the variety - some repeat flower, others don't.

Thank you all.

With geums I've cut off the long flowering stems from quite low (probably should have cut individual flowers off instead 🤦‍♀️).

I've deadheaded some dianthus too.

Roses- I know some are repeat flowering , and quite a few in my garden are, but I wondered if it was possible to cut off current buds of non-repeat-flowering ones in the hope the plant will 'think' it hasn't flowered yet and so will form new buds 🤔🤞

With geums I've cut off the long flowering stems from quite low (probably should have cut individual flowers off instead 🤦‍♀️).

I don't have any geums (not sure why not... adds to mental list...) but I find generally it's best to deadhead quite low, with secateurs or scissors not just take the heads - try to see where it's forming new buds or branching.

Thank you Errol. Does it work if I've cut the geum flowering stems right to the foliage/ground?

I've read that if you cut just the flowers off (as in just underneath the petals), the chemical that tells the plant that it can stop flowering has already made its way down. That's what I imagine in my mind anyway Therefore best to cut roses etc a bit further down. But I doubt my geums will recover and manage to put on the growth for the flowering stems quick enough in my time frame.