Gardening Plant Encyclopedia Vegetable Celeriac By Viveka Neveln Viveka Neveln Instagram Viveka Neveln is the Garden Editor at BHG and a degreed horticulturist with broad gardening expertise earned over 3+ decades of practice and study. She has more than 20 years of experience writing and editing for both print and digital media. Learn about BHG's Editorial Process Updated on February 1, 2017 Share Tweet Pin Email Celeriac Overview Description This old-fashioned relative of celery also goes by the name celery root. The edible part is actually an enlarged knob of a stem that grows underground. Peel off the buff or tan outer layer to reveal the crunchy white edible interior.You can eat it raw, but it's used most often to impart a mild celery flavor in soups, stews, casseroles, gratins, and other hearty baked dishes. Genus Name Apium graveolens rapaceum Common Name Celeriac Plant Type Vegetable Light Part Sun, Sun Height 1 to 3 feet Width 12 to 18 inches Propagation Seed Harvest Tips Start harvesting roots when they are 2-3 inches in diameter. Best flavor develops after a light frost. Pull the entire plant and discard the leafy tops. Roots store for up to four months in root cellar or refrigerator. More varieties for Celeriac 'Diamant' celeriac produces dense, large roots that resist disease. Roots reach mature size 110 days after planting. tips and ideas to grow herbs with vegetables More Videos » Was this page helpful? Thanks for your feedback! Tell us why! Other Submit