New research shows that by the years 2045-2049 temperature rather than location will have more effect on when cool-season crops, such as broccoli and lettuce, can be grown, while the location will have a greater impact on warm-season crops (cantaloupe, tomatoes, carrots). https://newscenter.lbl.gov/2020/08/25/some-of-americas-favorite-produce-crops-may-need-to-get-a-move-on-by-2045/