Adult plant with fruits. Asparagus is an herbaceous, perennial plant [3] growing to 100–150 centimetres (3–5 feet) tall, with stout stems with much-branched, feathery foliage. The 'leaves' are needle-like cladodes (modified stems) in the axils of scale leaves; they are 6–32 millimetres (1 ⁄ 4 – 1 + 1 ⁄ 4 inches) long and 1 mm (1 ⁄ 32 in) broad, and clustered in fours, up to 15 ...