Cranberry plants

Has anyone got experience growing cranberry plants. I bought 2 of them about 3 years ago, for the first 2 years I kept them in pots of ericaceous compost then transplanted them in the fruit frame earlier this year. I don’t know how they fruit they seem to be a ground cover plant but no sign of any flowers buds etc.

   
   

Sorry about the quality of photos I had to resize to post.

Haven't grown them, Can, although I do have a packet of seeds staring at me.
You might find this interesting https://www.youtube.com/watch?v=H8NMzQns3xw

Thanks Veggie, I did a bit of research today at lunch time and apparently they need to be 3 year old before they produce fruit plus other weather conditions etc. So who knows maybe this autumn