USDA Plant Hardiness Zones in Chile

The USDA Plant Hardiness zones are based on the average annual minimum temperature and do not take into account the average annual maximum temperature so even though southern Florida and parts of Patagonia are both zone 11B, Patagonia never gets much over 80F so not many tropical plants will grow here.

Chile has a range of zones from 1B on the tops of the glaciers in the south and the mountain tops in the north to 12A on the northern coastline near Iquique. Most of the central valley is zones 9 and 10 while the higher elevations range from zones 5-8. Surprisingly most of Patagonia is 8-10 based on elevation.

As a gardener, I can speak about gardening in my region - Los Lagos- and the Aysen region. Los Rios and Araucania regions are similar though they get more heat in the summer. Gardening in the Pacific Northwest of the USA is similar. I find the hemisphere change to be a bit confusing as I follow a lot of gardeners on Youtube and blogs so I made myself a garden calendar with all the months switched so September is like March. While the winters never totally freeze up, you can grow year round but the summers never get really hot so you need a greenhouse or sheltered area to grow heat loving plants like tomatoes, peppers, basil, eggplants, okra, etc.  You can grow cabbages and the brassica family, lettuces, carrots, and beets and other hardy vegetables all winter. The seed selection is pretty decent here and getting better every year. You can get all the basics but it is not permitted to import seeds to protect the agribusiness of Chile from invasive species, plant pests, and diseases.

https://www.plantmaps.com/interactive-chile-plant-hardiness-zone-map.php