The preliminary identification of the plant that I used to make those trees is that it is one of a group of plants that are commonly called "Ironweed." They are Asters, and are common in various forms all over the world, according to Dr. Justin Williams of Sam Houston State University.
He took a sample back to the school so he could put it under the microscope to determine the exact species. I'll let everyone know what the results are!
Here's a list of plants under the search criteria "ironweed" on enature.com:
http://www.enature.com/search/show_search_thumb.asp?searchText=ironweed
The weed I found in my yard looks most like New York ironweed.
-Rory
He took a sample back to the school so he could put it under the microscope to determine the exact species. I'll let everyone know what the results are!
Here's a list of plants under the search criteria "ironweed" on enature.com:
http://www.enature.com/search/show_search_thumb.asp?searchText=ironweed
The weed I found in my yard looks most like New York ironweed.
-Rory