Asparagus, or garden asparagus, folk name sparrow grass, scientific name Asparagus officinalis, is a perennial flowering plant species in the genus Asparagus. Its young shoots are used as a spring vegetable. It was once classified in the lily family, like the related Allium species, onions and garlic.
Fertilizer. To keep the soil rich and help feed the asparagus plants, top dress the soil annually with compost or mulch. You can do this in early spring before the shoots appear, or in the fall after the fronds have died back and been cut to the ground.