Valerianella locusta is a small annual plant that is an edible leaf vegetable with a characteristic nutty flavor, dark green color, and soft texture, popularly served as salad greens. Common names include corn salad, mâche.
The answer you planted into the twenty eighth of thirty plant beds in the Dijksgracht park, part of the Twijfel Zaaien/Raising Doubts project.
Latin name: Valerianella locusta
Artist family: Neutral