Japanese jacinth (Barnardia japonica; also known as Barnardia scilloides and Scilla scilloides) belongs to that special group of bulbs that bloom in late summer, like surprise lilies (Lycoris squamigera). I have read reports of its leaves appearing in spring and then disappearing before bloom time. Here in my Pennsylvania garden, however, its leaves pop up in late July to early August, followed quickly by leafless, upright stems topped with clusters of small, pink blooms. As new flowers continue to open through the month, the stems continue to elongate, eventually topping out at about 10 inches tall. Its seeds mature in September to October, after the leaves die back.
Full sun to light shade. Zones 6 (at least) to 9, reportedly. It may tolerate colder areas but hasn’t been widely grown yet, so there isn’t much data on its performance in those areas.
Collected in October 2020. At least 20 seeds.