When do you harvest asparagus?

You should not harvest asparagus until the spear is at least 3/4-inch thick. Most newly planted crowns will not produce this thick of spear until at least the second year.

Once the asparagus reaches the correct thickness, cut asparagus when the spears are 6 to 8 inches tall. Use a sharp knife to cut the spear 1 or 2 inches below the surface of the soil. The plant will continue to push up new spears throughout the growing season.