This native wildflower is beautiful on its own, but a mass planting is stunning, so my suggestion is to let it reseed itself, and pretty soon you will have a mass planting. If you want to collect some of the tiny red/orange seeds when ready (wait until the seed capsule is dry and turns brown) to scatter in other places, mix them with sand for a more even broadcast. Do not cover them with soil whether sowing outside or inside because they are very small and, besides that, they need light to germinate. Just press them into the soil. Named for the red robes worn by Roman Catholic cardinals, it is one of the showiest of wildflowers, or any flowers for that matter. It is grown in rich, medium to wet soil in full sun to part shade and blooms in late summer to early fall. It is an excellent pollinator, attracting butterflies and hummingbirds. Zones 3-9.
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