what's green and has leaves on it?

I am asking for help from my knowledgeable friends list.

See, we have this big backyard. And it's full of green things.

And some of the green things I kinda like, and some of the green things I kinda don't. But I have no idea what any of there are. I'm not kidding, most plants look the same to me. I have trouble telling cabbage from spinach.

So I went out and took some pictures of some of the more aggressive flora in our yard, and I'm posting them so that people can look at me like I'm on crack and say, "That's an "X", you dweeb."

( alien green thing #1 )

( alien green thing #2 )

( alien green thing #3 )

( alien green thing #4 )

( alien green thing #5 )

I tried looking for these online, but it's kind of hard to search for images if you don't know what you're looking for.