Quantity: 500 grams = approximately 1000 seeds. Seasonal fast-growing and fragrant flowers, a magical mix of pink, purple, and white! A wonderful ground cover in gardens and walkways, drought-tolerant and grows well in poor soil. Thrives in full sun or partial shade. Information about planting Alyssum. Planting time: October. Sun: partial sun 4-5 hours. Distance: scatter. Seed depth: surface. Sprouting days: 5-15 days. Pre-season: start indoors 4-6 weeks before the beginning of the planting season.