The list does contain a seed company which falls within the 100 miles; Sproutmaster in Elmvale, Ontario. I contacted the owner and asked about the seeds. She told me that the seeds were from all over North America and if I were to include individual seed types, she would happily tell me their origin. Sproutmaster's website is: http://www.sproutmaster.com/. The email address for Mumm's, should you wish to write them with similar queries, is: http://www.sprouting.com/.
The health benefits of greens cannot be overstated. Arugula, for example, is a readily absorbable source of calcium, iron, manganese, copper and potassium. It is also a good source of vitamins A, C, K and folic acid and it is high in both Omega 3 and Omega 6 fatty acids. On top of that, arugula is considered to be one of the most potent anti-cancer foods.
I have tried to see how much nutritional value is lost during travel, to no avail. Major fruit and vegetable companies, like Dole, don't provide information on the origins of their products on their website. I have written a letter to them but I don't expect a reply. One can assume that, much like other fruits and vegetables, they are at their nutritional best directly after harvest,and rapidly lose nutritional value soon after. Personally, I like the idea of cutting my greens fresh and consuming them immediately after. I know what kind of soil they were grown in (organic) and that they were not sprayed with chemicals. The pH of my water was tested and modified, allowing for optimum plant growth. The greens I planted mere days ago are happily reaching their little arms to the skies. Every morning they are significantly taller. By the end of this week I will be consuming salad greens that I grew myself. This summer I was buying my greens from Fourfold Farms and Backyard Bounty, both located at the Guelph Farmer's Market. Now I'll be eating them right out of my windowbox. How's that for local?