Lots of us use GE Silicone II. I have used it in zone 6 (CT) & in Zone 10 (So. TX) with no failures in 6 years.

Thank you for the quick reply. I will try it. I live in the south,.

I only use the GE ll clear silicone for outdoor use there are different ones but the one I use is the blue and white tube sun and freeze proof. You can get it in the big tubes for a gun or just small squeeze tubes I like the small tubes better.
SUN-/FREEZE-PROOF

I'm in Virginia and I use the same GE Silicone II for glass. Make sure you check the expiration date...sometimes the old stuff doesn't stick well.

Your plate flower is very pretty too!

Thanks for answering my question. Maybe I can get to town tomorrow. I have about 10 ready to be finished.

Very nice! I love blue flowers. Hope rest of your gluing goes well! Jan