USDA just updated their plant hardiness zone data for the country, since global warming is steadily changing what can grow where. This reminded me that I run an API for getting the plant hardiness zone for a given ZIP code. I just checked the traffic stats on CloudFront, and it's gotten over 100 million queries in the past year. It's a modern miracle that hosting that costs basically nothing and requires zero work by me annually. Now to update the source data! https://github.com/waldoj/frostline/