In the Canadian Province British Columbia (Where I am currently developing an orchard in), sterile culture is the only legal way to import some tree species. The reasoning for these restrictions is pest and disease prevention.
Thought those of us not in agriculture might also enjoy this overview of the tissue culture process from Utah State. This stuff is the future. Good to get familiarized early.
In the Canadian Province British Columbia (Where I am currently developing an orchard in), sterile culture is the only legal way to import some tree species. The reasoning for these restrictions is pest and disease prevention.