The wheat grass, or sabzi, on the Haft-sin table is green. Often called sabzeh, this fresh sprouted greenery is one of the central symbols of the Nowruz display and represents growth, renewal, and the arrival of spring.
Families commonly grow the sprouts in a shallow dish before Nowruz. Wheat is especially familiar, but sabzeh may also be grown from barley, mung beans, or lentils. The seeds germinate and form a dense, vivid carpet of shoots, making green the recognizable color associated with this Haft-sin item.
Sabzeh is part of a wider seasonal message: the old year is ending and new life is beginning. Other Haft-sin objects carry different meanings, such as apples for beauty or love, garlic for health, vinegar for patience, and sumac for the color of sunrise.
The greenery has a role after the holiday too. On Sizdah Bedar, the thirteenth day after Nowruz, people traditionally take the sabzeh outdoors; in some customs, it is released into flowing water. The term sabzi can mean greens more broadly, but in this question the table item is the sprouted sabzeh.