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To recover an intuitive sense of what will be in season throughout the year, picture a season of foods unfolding as if from one single plant. Take a minute to study this creation—an imaginary plant that bears over the course of one growing season a cornucopia of all the different vegetable products we can harvest. We’ll call it a vegetannual. Picture its life passing before your eyes like a time-lapse film: first, in the cool early spring, shoots poke up out of the ground. Small leaves appear, then bigger leaves. As the plant grows up into the sunshine and the days grow longer, flower buds will appear, followed by small green fruits. Under midsummer’s warm sun, the fruits grow larger, riper, and more colorful. As days shorten into the autumn, these mature into hard-shelled fruits with appreciable seeds inside. Finally, as the days grow cool, the vegetannual may hoard the sugars its leaves have made, pulling them down into a storage unit of some kind: a tuber, bulb, or root.
So goes the year. First the leaves: spinach, kale, lettuce, and chard (here, that’s April and May). Then more mature heads of leaves and flower heads cabbage, romaine, broccoli, and cauliflower (May–June). Then tender young fruit-set: snow peas, baby squash, cucumbers (June), followed by green beans, green peppers, and small tomatoes (July). Then more mature, colorfully ripened fruits: beefsteak tomatoes, eggplants, red and yellow peppers (late July–August). Then the large, hard-shelled fruits with developed seeds inside: cantaloupes, honeydews, watermelons, pumpkins, winter squash (August–September). Last come the root crops, and so ends the produce parade.
Plainly these don’t all come from the same plant, but each comes from a plant, that’s the point—a plant predestined to begin its life in the spring and die in the fall. (A few, like onions and carrots, are attempting to be biennials, but we’ll ignore that for now.) Each plant part we eat must come in its turn—leaves, buds, flowers, green fruits, ripe fruits, hard fruits—because that is the necessary order of things for an annual plant. For the life of them, they can’t do it differently.
Some minor deviations and a bit of overlap are allowed, but in general, picturing an imaginary vegetannual plant is a pretty reliable guide to what will be in season, wherever you live. If you find yourself eating a watermelon in April, you can count back three months and imagine a place warm enough in January for this plant to have launched its destiny.
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