Spanish Oyster Plant also called Golden Thistle, Scolymus hispanicus, is a native of southern Europe and requires the same culture as Salsify but the flavor is milder. Leaves are pinnately cut and flower heads are small and yellow. Black salsify, Scorzonera hispanica, is a perennial popular in central Europe. The roots are black skinned and may be somewhat slimy with a creamy colored interior. The leaves are deeply veined, have wavy margins and are sometimes used as a salad green. Flowers are yellow and 2 inches in diameter. Salsify is available from late fall through early spring.