This was a thought I had when I started my business last year. Our society is all about supporting local business and sustainable products. Well, tea from Asia and Africa really does travel a long way approximately 15000kms.
We searched to find a locally sourced grown tea in North America. And we found it. It's called Yaupon. It travels approximately 1500kms. This is the only plant grown in North America which contains caffeine.
Check out this video for the history of Yaupon.
The research is still on to find a way to grow tea in Canada.