Did Jesus Know About Tomatoes?

If Jesus really existed, and he was truly a God, then he must have been all knowing. If so, he must also have known about the fruits and vegetables that were growing in the continent to be 'discovered' 1,500 years later. For example, he must have known about tomatoes, or potatoes. And yet, he never talked about either of those, or about anything other than what the people who wrote about him knew already. That's not very impressive for an all knowing being.