VEGETABLES / MISC-ALLIUMS Star of Persia. 18" tall x 10-12" wide. Winter sow seeds or give the seeds 30-60 days of cold, moist treatment. Plants bloom with 10" spheres of silvery-purple flowers. $3 Add To Basket Listed In: 2022, 2023, 2024, 2025 Wyoming USDA Hardiness: 5a View Profile & Listings