I'd like to say a milkweed of some sort but I could be wrong.

Looks like butterfly weed, asclepia curassavica to me. They volunteer pretty readily in my garden. I
Molly

I don't remember any dark coloration on the leaves of my asclepia curassavica.

I have seen weeds that look like this, but I don't know the name. We all know one person's weeds can be another person's flowers.

It reminds me the leaves of celosia (cockscomb). There are many types of it.

Omar

Here is a link that might be useful:

I think you are right about it being a weed Ruth, I just can`t remember the name of it.
Tally HO!