Tetragonia tetragonioides 50 days. This 2 foot tall perennial has 1–2 inch, distinctive arrowhead-shaped, lime green leaves that have a spinach-like taste. Usually grown as an annual, sow it in the spring after the danger of frost has passed. Plant ½ inch deep and about 6 inches apart. After germination thin to 12–20 inches. Harvest the leaves and tender shoots. Approximately 65 seeds per 5 grams.