Transplant into garden after last spring frost, 2-3 apart. Cut back in the fall and mulch to protect from winter weather. Harvest crop the following spring. Perennial to zone 7.
Flower buds have thick, fleshy scales and solid centers.
Harvest when young. When plant reaches 2-3 feet high, wrap paper or burlap around the leaf stalks to blanch them. Harvest in 4 weeks. Celery-like plant is actually a member of the artichoke family. Blanched stalks have piquant flavor.