What Greek Fruits, Vegetables and Herbs Are in Season Now? Technically, an avocado — like the tomato — is a fruit, although many consider both to be vegetables. peppers, vlita (or Palmer amaranth), and some immature cucumbers Much of the bounty of the late winter and early spring months has. See when your favorite seasonal fruits and vegetables are in season, at their peak of flavor, and often at the best price. You can also look up produce by seasons: spring, summer, fall, winter. Apples, late summer Cucumbers, summer. Before we answer the question 'Is cucumber a fruit or a vegetable?', we therefore In botany, fruits, flowers, leaves and stems can all be seen as vegetables.