I reckon the Christmas cherry would do okay there (Solanum pseudo capsicum) or Jerusalem Cherry - they like temperatures between 50 and 60 degrees. Or what about Capsicum, although that needs minimum 55 deg F. Would see you through from before Christmas for a couple of months. Plus a bit of Hedera helix for variegated colour, and maybe ornamental cabbage from late September till you get the Jerusalem Cherry. Not flowers exactly, but would be colourful.

Maybe Polyanthus Primrose, or Florist's Cyclamen?

Crocus. A few pots of early flowering C. chrysanthus varieties bring excellent early colour and you can plant them out in the garden afterwards.

The ornamental cabbages that Bamboo suggests are great Izzy !
I've had some here for the last couple of winters and they're brilliant for winter colour :-)))))

Christmas Cacti & Easter Cacti need little watering and the cordylines only on occasions, Cineraria Maritama will also survive, on very cold nights cover with fleece. I see it's your birthday with Goy soon LOL. Happy Birthday.

WOW! Lots of suggestions there! Thank you!
I tried ornamental cabbages a few years ago, Louise I had forgotten about them..brought .lovely variegation and colour to pots.
I never thought of Christmas Cacti, Doctorbob1.. a.friend has massive ones in his house...always thought they would need warmth!
The Christmas cherry looks gorgeous, Bamboo...never heard of it...will look for that.
Thought of crocus,...always so reliable. Bulbaholic..and minature daffs!
Tugbrethil, I had polyanthus etc last year. The cyclamen died very early...think the winter was very extreme though. I've ordered a triling pansy this year...plug plants...not arrived yet!
At the moment I have a large fig out there...but will have to bring it in soon. Hubby wondered if we should just have ONE large plant in the corner....I would have to research that as not sure of temperatures for larger porch plants!
I had a large Christmas tree last year, decorated for the grandchildren with hundreds of lights etc....think he might be trying to avoid that again LOL...we had a large one in the lounge too! He really thinks Christmas gets too much hype!

Oh dear, Christmas - I went for a pub lunch today at a place which encourages young children (not my choice, just at the end of my road, so close by did it for me) but they had a fully dressed, twinkly lit 8 foot Christmas tree in the restaurant! Dear Lord, I thought, and then, they came up and asked had I thought about Christmas? No, I said, and I don't want to now either, so don't talk to me about it - apparently it was to remind people to book early. Can't think of anything worse than a pub lunch on Christmas day...

OMG...horror of horrors! Likewise, I can't imagine a pub Christmas lunch...but the spectacle of an 8' tree in August would put me 'off' that particular pub for months to come, Bamboo! No doubt the hype will start soon in the shops! GROAN!

Doctorbob, I was surprised to see it's almost a full year since I joined GOY! Time flies when you are enjoying yourself, they say!...it also goes so much faster the older I get! LOL