Re: What colleges offer Botany as a major?

I do not know of any published list of colleges and universities offering 
botany degrees. Professor Marshall Sundberg, the editor of the Plant Science 
Bulletin published by the Botanical Society of America kindly provided me with 
the following list based on his survey: 

Connecticut College is the only Liberal Arts College that still has a botany 
department.

Among research universities, botany (plant biology) departments are at:
Arizona State
Cornell
Florida
Georgia
Hawaii
Illinois
Iowa State
Massachusetts
Miami University (Ohio)
Michigan State
Minnesota
N. Carolina State
New Hampshire
Ohio State
Ohio University
Oklahoma
Oregon State
Rutgers
Tennessee
U.California - Davis
U.California. - Riverside
Washington
Wisconsin 
Wyoming

The Botanical Society of America has a booklet on Careers in Botany: 
http://www.botany.org/bsa/careers

If you do a search on google.com for botany department, you might find some 
more. The trend at many colleges and universities has been to merge Botany and 
Zoology Depts. into Biology Depts. Therefore, you may still be able to get a 
good botany education at universities or colleges that have biology 
departments but no actual botany department. The degree you receive from a 
Biology Dept. might be called a B.S. in Biology but it could be equivalent to 
a B.S. in Botany if you choose the right courses. For example, the Saint Louis 
University Biology Department offers a BS in Biology but has several botany 
professors and offers many botany courses. It also has an association with the 
Missouri Botanical Garden, which has several botanists who are adjunct faculty 
at SLU. 

Depending on your interests, you might also consider a major in another plant 
science fields such as Horticulture, Forestry, Agronomy and Plant Pathology.