You don't really want a Pelargonium plant that small to flower yet. It should be busy building itself up, as yours is. They also need reasonably warm temps and sunshine to flower. It will be obvious when it is going to bloom because the flower stalk will elongate and you will see a cluster of buds.

Thank you for your advice. This newbie is just too excited after growing them for 10 weeks already. I will be more patient. Will post a photo when it does :)

Still not flowering :(

First flower bud formed :) 15 weeks since planting!!!!!!

Congrats petra, isnt it exciting, one of mine just flowered and I'm so pleased with the color. Do you know what color your flowers will be or is it going to be a surprise? Do you know you can dig it up and bring it in for the winter if you want to save it?
Chirstine