I'm new to this website so perhaps this comment won't be timely enough.
I love, love, love clematis armandii. It has 4-5" long, large, tough and evergreen leaves unlike most clematis. I have no idea how long it will get but I'd guess easily 10-15 ft minimum on either side (20 to 30 ft total).
- Most information on c. armandii says it blooms in the spring. Here in the San Francisco Bay Area it blooms in January when there is precious little else blooming (9a or 9b.)
- And it is fragrant.
- And it is deer proof.*
- And it grows up deciduous trees so you have leaves all year around.
Did I say I love this plant?
* It was deer-proof until the long drought we had and the deer decimated all but the section growing up the trees. It is recovering by putting out copious amounts of new vines from wood I thought was dead, but since it blooms on last year's new growth there was no flowering this year