![Set 4 - Fall Harvest](https://images.ctfassets.net/cxgxgstp8r5d/cm-197-graphic-set-4/9803781d8b8009ae16f70bc9e7c30ab7/2015HardinessZones_Still_1981_2010.jpg?w=3840&q=85&fm=webp)
![Set 3 - Fall Harvest](https://images.ctfassets.net/cxgxgstp8r5d/cm-197-graphic-set-3/d7f8ba1a2d65018ecbdb79cb563a32f1/2015FallTempTrends_Northeast.jpg?w=3840&q=85&fm=webp)
![Set 2 - Fall Harvest](https://images.ctfassets.net/cxgxgstp8r5d/cm-197-graphic-set-2/e2f1992f7af401c3807a0b16bd3ae4b1/2015GrowingSeason_CONUS.jpg?w=3840&q=85&fm=webp)
![State - Fall Harvest](https://images.ctfassets.net/cxgxgstp8r5d/cm-197-graphic-state/53120edbf90372792b9b34101953abf7/2015GrowingSeason_NY.jpg?w=3840&q=85&fm=webp)
![growing season](https://images.ctfassets.net/cxgxgstp8r5d/9e6abdc80e1826e71b85a2f68d441db8/6e83004d80b30a164b342626f532dd9e/2015GrowingSeason_CA.jpg?w=3840&q=85&fm=webp)
As the planet warms from the burning of fossil fuels and the buildup of greenhouse gases in the atmosphere, the length of the growing season will continue to be affected. Nationally, the growing season is already about 15 days longer than at the beginning of the 20th century. Western states have seen the greatest changes since that time. Arizona, California, Nevada, and Oregon now have growing seasons that are more than a month longer than they were a century ago. In turn, this will influence when, where, and what types of food crops are planted and harvested - meaning agricultural practices will have to adapt, and impacting the types of produce available at your local supermarket.