[stephencanon]

In much of the rural US, it’s easy (ask folks which farmstand they go to). In cities, it’s also pretty easy (asian or mexican grocery for non-organic, specialty produce shop if you want organic). The problem is the suburbs. Don’t live in the suburbs. If you must, get veggies at the farmer’s market.

[bluGill]

Every suburb I've been in has a big box grocery store with a large selection of fresh produce. If you want something specific you might need to go to a specialty store, but there are plenty of vegetables where people buy groceries. You won't find them at gas stations, but nobody buys groceries at gas stations.

[stephencanon]

As identified in sibling posters, the issue with these vegetables, in as much as one exists, and speaking very broadly, is that they look pretty but are flavorless.