Stellata Plena | Barlow-series 'Black Barlow'

but it’s grown primarily for its foliage

temperature fluctuations

How tall do the flowers grow

though it should still be used with moderation if consumed

25 Magenta Clematis Seeds sensitive plant Stellata Plena | Barlow-series 'BlackMagenta Clematis Seeds Bloom Flowers Perennial Clematis flower seed takes about 21 28 days to germinate. You can sow the flower seeds in trays indoors and transplant the seedlings after the frost season, or sow the flower seeds directly outside after the danger of frost has passed. Before sowing Clematis seed, refrigerate the seed for 2 3 weeks. Some gardeners prefer to start the flower seed outdoors in the late fall or in the winter in a cold frame.