Another name for celeriac is celery root.
Indoor Sowing Tips:  1) Since celeriac germinates and grows slowly, start the seeds indoors around 3 months before the last spring frost under grow lights. 2) Since the best soil temperature for germination is between 55°F and 70°F, a seed heating mat would be helpful. 3) Celeriac seeds are typically planted 1/8″ deep.
Growing Tips: 4) Transplant the celeriac seedlings a few weeks before the average last spring frost date. 5) Space the seedlings about 6″ apart or 4 plants per square foot.  6) Celeriac likes consistent moisture. 7) As for plant nutrients, celeriac prefers phosporus and potassium, not nitrogen 8) Once celeriac starts to grow above ground, hill the idrt over them so the tops of the celeriac don’t turn green.
Click here is you want to find out more about sowing and growing celery which is in the same plant family as celeriac. This plant family is called Unbelliferae or the carrot family. One key difference is that celeriac is a Root vegetable.
