Question re: zones.
I am very much an amateur gardener and have a question regarding zones. When a plant's info says that it is 'hardy' to zone ___ does that mean that this is the highest zone in which the plant could be expected to thrive, or even live?
Changing gears, this is my second year of building a butterfly/hummingbird garden. Any and all tips are most welcome. I am in Baton Rouge, La.