"stilljustme2;c-16905246" wrote:
There's usually one in the Arts Quarter (near the Arts Center), and I've seen one in the Fashion District. You can find some of the base game produce there -- it's a good place to find tomatoes especially which are hard to find in the wild (only plant I know of is in Oasis Springs).
The only other in the wild tomato plant I've ever found is at the Hare Square park in Windenburg. It seems to be randomized though with what you'll get in those planter boxes, because sometimes they're not there when I start a new save. You can also get a tomato from the Ranger Station in Granite Falls.