To me, that sign or infographic is more for when you can buy produce in a store.
Who harvests grapefruits, lemons, oranges, papaya, and tangerines in January?
Mangoes and pineapple in March?
Maybe someone in Hawaii or South America?
Most seed packets give information about when to harvest.
Plan what you want to grow then determine when you can plant, usually after the last frost date.
I found this on Pinterest though not knowing when the last frost date is I don't know if this would work for you:
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There are lots of different infographics on Pinterest:
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