Asparagus, Asparagus officinalis, is a crown based vegetable. In spring it produces vigourous and delicious “spears” Also known as Garden Asparagus. Established crowns will produce for up to 20 years. Tonic for the urinary tract, clears toxins accumulated over winter. Asparagus is a native to the Mediterranean and prefers a moist, well drained soil in an open sunny position. Frost resistant but drought tender. A dioecious perennial growing to 1.5m x 1.0m.