When I first read this I thought you meant a Type 3, and there aren't many doubles in this group. Then I realized you meant 3 years old.

I would say that you have Proteus, a group 2 clematis. If you cut her back about one third after the bloom cycle ends, you may have single flowers in the Fall.

Looks like you have been doing everything right so far.

Marie

Here is a link that might be useful: COTW Proteus

Thank you. I didn't know about the pruning either. Thanks for the link. Donna

Yep, I agree. It looks like the double blooms on my Proteus.

Oh you lucky Duck!!..I've watched both my clematis "Proteus" each year with anticipation of a double and only get a semi-double...it's very pretty..the Double Form is what drew me to it..for I like the BIG,Gaudy and Sassy Clematis such as the Doubles provide...ahhhhh...maybe one day?...Jeanne