I don't think of them as house plants; mine grow directly in the ground outside. You probably get too much rain for that, but the porch idea sounds good, if that's a covered porch. It may also be getting too much light in the house.

Thank you for the advice.

Do I understand the temperature stuff regarding blooms correctly ?

Coco-mine bloom in summer on a northfacing deck, no direct sun. All winter they are in 65-80 F in my greenhouse-type room, bright winter sun. Miraclegro every month or so, same with Superthrive. For what it's worth; works for us.

Maybe clivia don't like air conditioning? We don't have that much around here (at least I don't).

I'm not exactly an expert on getting clivia to bloom but I believe they would need a bit more fertilizer. I use Osmocote pellets in the spring which last for 9 months. After a summer outside with some protection from the hot burning sun which will bleach the leaves white in a short time I stop watering completely for 2 months. Indoors they don't need much light so outside they need shade for sure. This is a dry rest period. Resume watering and fertilizer again and you should get blooms. They also come with variegated striped leaves and in various colors beside deep orange there is a pale yellow, peach ect. Good Luck!

Clivia have a mind of their own..

They can bloom watered regularly, fertilized, or not fertilized at all..They can bloom left outside or put inside in the dark,
Grown in a warm environment or left in the cold.
They do what they want no matter what you do..
Many bloom just being ignored..I have done it all and no matter what I do, they bloom every year for me every spring..

Mike..:-)

One more thought..

I have some in very tight pots, root bound, and some in pots with lot's of room to grow, and both flower abundantly..:-)

Mike