Throughout the years I've noticed some warm climate gardeners giving advice to cold climate gardeners in this forum.
The difference is the root depth needed to survive winterkill.
Methods used in the warmer climate including chemicals , chemical fertilizers and raised beds do not work in cold climate gardening.
Emphasis in cold climate gardening is in creating and maintaining root depth and a healthy soil , especially the rhizosphere.
Cornell and Oregon St and Ohio state and Iowa st and the RODALE institute in PA all have studies focusing on soil health and supporting a healthy rhizosphere.
In warm climates it is more common to need chemicals to fend off an attack from pests or fungal diseases.