East - West
Comparison of the Sunset National Garden Book Map for California and Florida

As an example of the differences between the Western versus the Eastern versions of the Sunset National Garden Book Map consider the California map below with 18 listed climate zones and the Florida map with only 3. While the California version does an excellent job identifying the microclimates within the state, Florida gardeners in Orlando, Tampa and St. Petersberg (arguably three microclimates) are left with little guidance.