Diplotaxis tenuifolia Produce plants with leaves that are less lobed and more strap-like. Its mild flavour add depth and sophistication to any salad. Astro is perfect for baby greens in early spring and fall - even in winter, as it's very cold hardy. Baby greens are ready to cut in only 21 days. Arugula is very well suited to microgreen growing. As microgreens it is delicious and tender, strongly flavoured, but delicate on the palate. With a nutty, spicy taste that is sometimes pungent or peppery, arugula really perks up salads, sandwiches, and even pizza. It is very cold hardy, and has a milder flavour when grown in cool weather. It is high in vitamin A and potassium.