40-50 Days to maturity. Toona sinensis A. juss. Chinese Toon Seeds - North Red. Heirloom, Non-GMO. Purple type. Vigorous growing. Keep the seeds in a cool and dry place. However, we recommend immediate use. Chinese toon is a perennial hardwood but the young leaves and shoots are a vegetable called Hsiang Chun Ya (Xiang Chun Ya). The fresh young leaves and shoots are rich in aromatic substances, vitamins, and minerals. Toon is also used in Chinese traditional medicine and is widely planted in Asia. ~ 1,500 seeds per oz.