Mine just started throwing a spike this weekend. It wasn't there Friday, and it is very clearly there now, Sunday night. They can bloom again in the summer, but I guess this isn't that common. Although I've only had mine for one summer and it did it then. It probably depends on individual plants.

Hi Bunti,
I'm gonna go out on a limb and say your plants don't look big enough to throw a bloom spike. They like to be crowded. If you can, plant them outside in the shade (I'm zone 8 too and have had mine planted out in a shady spot for three years now), or leave them in the planter you have them in and continue to feed them, water them, but not too much (they prefer to be on the dry side) in a filtered light spot and they may bloom for you next Spring. Good luck!
Firefly

Hello Firefly,

I live in charlotte, NC. before last year i left my clivia pot outside in the winter. they died. This time i am keeping them inside.

Where do you live? whould you mind sharing your clivia plant photos. What are all the clivia's you have?

Thanks