Rocky' is a fast-growing, wild-type arugula that grows in a compact rosette form. Wild arugula has a slightly stronger, more complex flavor than regular arugula, and is perennial in USDA zones 6—10. Its flavor can be described as peppery or mustardy with a hint of nuttiness. Most often eaten raw in salads, arugula can also give pizzazz to pizza or be enjoyed simply steamed.
• Botanical Name: Diplotaxis tenuifolia
• Days to Maturity: 40–50 days
• Family: Brassicaceae
• Native: Asia and Europe
• Hardiness: Frost-tolerant perennial in USDA zones 6–10
• Plant Dimensions: 8"–10" tall at maturity
• Variety Information: 2"–6" soft, green leaves. Wild arugula has more deeply-lobed leaves than common arugula. Edible flowers are yellow.
• Attributes: Good for Containers
• When to Sow Outside: RECOMMENDED. 2 to 4 weeks before your average last frost date, when soil temperature is at least 40°F; ideally 50°–70°F. Successive Sowings: Every 3 weeks until 4 to 6 weeks before your average first fall frost date. Mild Climates: Sow in fall for winter harvest.
• When to Start Inside: Not recommended.
• Days to Emerge: 10–15 days
• Seed Depth: ¼
• Seed Spacing: A group of 3 seeds every 6"
• Row Spacing: 6"
• Thinning: When ½" tall, thin to 1 every 6"
• Harvesting: For the mildest, best-tasting baby greens, pick leaves when 2"-4" long. Pick individually or cut off the plant at ground level. For the best flavor, harvest before plant begins to flower, unless you plan to eat the flowers.