Asparagus officinalis
Asparagus is a perennial vegetable harvested for its young shoots. It originated in Asia Minor and has been cultivated for more than 2,000 years; in Maine, it is one of the first major spring vegetables.1
The edible spear is a rapidly growing shoot. If left alone, it develops into a tall, fern-like plant that replenishes the crown for the following year.1
Unlike an annual vegetable, a well-kept asparagus bed is a long-lived planting. The first seasons are an investment in the crown; established plants can then return for years.1
Freshness matters unusually much after harvest. The spear remains a rapidly growing shoot and continues consuming its stored sugars faster than any other common vegetable; sweetness and juiciness fall while fiber develops, especially during the first day and when the spears are kept warm or exposed to light.2
Some of that toughness cannot be cooked away. Thick-walled, lignified supporting cells persist through heat and create the stringy texture of older spears, while harvest and storage stresses can accelerate further lignification.3
Footnotes
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University of Maine Cooperative Extension, “Growing Asparagus in Maine,” accessed July 17, 2026. ↩ ↩2 ↩3
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Harold McGee, On Food and Cooking: The Science and Lore of the Kitchen, rev. ed. (Scribner, 2004), PDF p. 328. ↩
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Owen R. Fennema, ed., Food Chemistry, 3rd ed. (Marcel Dekker, 1996), PDF p. 1113. ↩