Nasturtium's large, pebble-like seeds are easy to plant, and it's amazing to watch the plants quickly grow. It's also fun to watch your guests' surprise as they ponder whether or not to eat the edible, peppery flavored flowers atop their salads, or garnishing their dinner plates.
• Botanical Name: Tropaeolum majus
• Family: Tropaeolaceae
• Native: South America
• Hardiness: Frost-sensitive, tender perennial usually grown as an annual; perennial in USDA zones 10 and warmer.
• Plant Dimensions: 10"–12" tall
• Variety Information: 2"–2½" wide single flowers in shades of yellow, orange, mahogany, and cream.
• Exposure: Full sun to part shade
• Bloom Period: Late spring to frost
• Attributes: Attracts Pollinators, Deer Resistant, Drought Tolerant, Edible Flower, Rabbit Resistant
• When to Sow Outside: RECOMMENDED. 1 to 2 weeks after your average last frost date. Mild Climates: Sow in fall for winter bloom. Ideal soil temperature for germination is 55°–65°F.
• When to Start Inside: Not recommended. 2 to 4 weeks before your average last frost date. Roots sensitive to transplant disturbance; sow in biodegradable pots that can be directly planted in the ground.
• Days to Emerge: 7–14 days
• Seed Depth: ½"–1"
• Seed Spacing: A group of 3 seeds every 8" – 12"
• Thinning: When 2" tall, thin to 1 every 8" – 12"