I heard that gerbera daisies (Gerber daisies) are originally from Africa, so I thought I'd ask all of you African plant experts a question!

I live in Oklahoma City, and I have some gerberas planted in a pot. They were blooming profusely when I bought them in March, but have not produced any new blooms since, despite my removing the spent blooms.

The foliage is looking great, and I can see some little white buds way down at the base of the leaves, but those have been there for weeks and have not formed into flowers.

So here's my question: Why aren't they blooming? Is this a problem with the amount of sunshine? I first had them placed in a shade garden where they only received filtered sun, and then (in an effort to get them to bloom), moved them to almost full sun. But still nothing.

Also, the temperatures here have been pretty high (high 80s, low 90s).

What is the ideal location/amount of sun for gerbera daisies in Oklahoma?

Thank you very much!
-kparker