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These plants are normally propagated through rhizomes or cuttings rather than by seed. However, a quick online search may turn up reputable nurseries having heirloom seeds for sale.

For more info on these plants, this resource should help: http://www.hort.purdue.edu/newcrop/afcm/hop.html

Without seeing the plant, we cannot properly identify it. If you can send in a picture, this would help. In the meantime, this article will provide information on growing hops plants: https://www.gardeningknowhow.com/edible/vegetables/hops/growing-hops-plants.htm

I have listed a few links for you.
A personal note on hops. I planted an ornamental variety 'Biancha' two years ago growing it along side of a clematis on a trellis. It has not been invasive and is absolutely beautiful in the garden with a lime leaf color. The hops are a great texture and add visual interest. I'm in Zone 4 and it has wintered over well.
I think Hops would be a great choice. Good Luck.

https://www.gardeningknowhow.com/edible/vegetables/hops/growing-hops-plants.htm
https://www.gardeningknowhow.com/edible/vegetables/hops/hops-winter-care.htm

https://www.gardeningknowhow.com/special/spaces/plant-a-privacy-screen-plants-that-grow-fast-for-privacy.htm

https://www.gardeningknowhow.com/ornamental/vines/clematis/spring-flowering-clematis.htm

This is a rust fungus.
Air circulation can help inhibit it, but you will want to remove the leaves if possible.
Neem Oil can be used to treat it.

Here is a link that explains it.

https://www.gardeningknowhow.com/plant-problems/disease/learn-about-plant-rust-disease-and-rust-treatment.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

From you description it could be a Hops Vine.

Please send an image if possible.

Sam,

A hops vine planted this spring will put most of it's energy into establishing roots and will likely grow to a slender 6-7 feet tall. You may get a handful of hops berries. This is what happened for us last year, our first year of growing hops.

This year, the vines are sprouting with vigor, sending at least a half dozen shoots out and already they are 3-4 feet long. Expecting the plants to be MUCH larger this season. Not sure what that will mean for a hops harvest but certainly more generous.

By next year, we expect the vines to be reaching mature heights and producing in a useful way. Until then, we're enjoying the robust nature of the plants and the shady covering over their lattice supports.

Not sure what variety you are considering, but we planted Cascade, Chinook and Crystal and all are growing at a similar pace. We bought organic rhizomes: https://www.leafari.com/hops.html

Rena