American Purple Top Rutabaga was developed in Canada and has become extremely popular throughout North America. It produces purple topped roots with pale yellow fine-grained flesh. American Purple has nearly round 4" to 6" roots and are free of branching; easy to grow. Plant seeds outdoors mid-spring to midsummer. This Rutabaga prefers rich, fertile soil. Plant seed 2 to 4 inches apart then cover seeds with ¼ inch fine soil. Rutabagas can be grown all summer long from late June to early July. They are best harvested after a light frost.