Honey suckle!

[EastTx]

How difficult will it be to keep the Japanese from spreading? My neighbors property is very thick and I would hate for it to spread over there.

It is going to spread. If planted along a fence line, you can mow each side to keep your plants from directly spreading onto a neighboring property. The only problem is that in the winter it has berries and birds love them. They will be the ones doing the spreading. I would be surprised if it was not on your property somewhere already.

[EastTx]

Here are the berries I mentioned. My plants are full of them right now.

Another pic of an area that is getting browsed quite a bit.

[GTXHUNTER88]

Do not plant invasives will spread like wild fire and be a pain to remove

[Backwoods101]

Thanks guys. As always, great feedback.