Vertumnus - Printable farmers' market seasonality posters
Show HN: Vertumnus – printable posters of farmers' market produce seasonality

Vertumnus generates beautiful printable posters that show exactly what's in season at your local farmers' market. Using region-specific produce data with week-level granularity, it helps you eat fresher, support local growers, and plan meals around peak harvests. The entire project was wildly overengineered in a single 731-prompt Claude Opus 5 session over 46 days, and you can browse all prompts on the /about/transcript page. Visit vertumnus.fyi to learn more and create your own seasonal poster.
vertumnus was wildly overengineered in a single 731 prompt Claude Opus 5 session over a 46 day period.
- perspectivezoom
Oh, neat. I submitted this a few days ago, and it got no traction back then. Thanks mods for giving it a second chance.
I probably should mention that I'm looking for new opportunities. My LinkedIn is at https://www.linkedin.com/in/perspectivezoom and you can reach out there or at hn@perspectivezoom.com.
- skyberrys
It sounds like you need me to visit your market ( or my market... It only takes one super user per market and I assure you I am almost always there), film everything and then feed that into your website. I like the idea, but it's not complex for my fanatical farmers market mind. It only has two geographic regions and okay 1 is only hours driving from me, but I would be more likely to use it if it was my own region.
Also it has a picture of an avocado and no data about avocados.
And don't get me started on the market availability between the first hour and the last hour because if I keep losing all the caviar limes to the restaurant buying the whole batch I'm going to start camping at 6am.
Some things I hunt for: Concord grapes, pomegranate, caviar limes, raspberries, mara des bois strawberries, amaranth and all types of kale.
ETA: the early girl tomatoes I recall as end of May or June, probably mid June for you. Too late now I think. Those little orange oblong ones are good though and my favorite breed of tomato is Japanese tomatoes. They have almost 100 percent availability at my market too because they have a specialist grower who uses green houses.
- mariocesar
Great work, and thanks for sharing the transcript! Just skimming through the chats, I've already learned a lot. Would be so awesome to have this for any region/city, but that is a data problem to solve.
Congrats again!