It’s nice that you found out about landscape architecture and am considering getting a masters in it later. I found out about it later in my undergrad and am doing the masters now.
I know landscape architects who get their MBAs later and have specialized more on the business side of things and others who work mainly with the design or other aspect and hate doing the business side of things. That isn’t to say a landscape architect needs only business or only the conservation side. Design can’t survive only by itself, but one of the strong things about the field is strong ability in the sciences.
I guess what I’m saying is, it depends on what you’d like to study and spend these two or so years left of your education. I have classmates who have studied economics, or a hard science, and they seem both well suited.
If it’s possible, maybe you can contact some program heads at landscape architecture schools to see what they think. Or talk to local landscape architects.
Let me know if that helps or it it just muddled things up more.