There are no plants in Alberta that are grown for "stem."
No.
The Wild Rose is grown pretty much everywhere in Alberta, and is found everywhere, if you know where to look.
they are grown in a magicial field in unicorn land
Idaho
Not naturally, but rosemary can/might be grown in greenhouses. i think
Alberta
Grand Prairie
Potato was grown in 1995
yes
it is found where you can find alfalfa
Wainwright and Bearspaw