What are the pros? Super easy
What are the cons? Differing color year-to-year
Planted a few two years ago and got the lovely dark purple color with silvery foliage. Dropped the seeds and literally forgot about them, and they did magnificently in full sun and mulched soil. The next year, I had so many volunteers come up that I didn't need to re-seed! While they do come up readily, they are also not hard to pull up if one shows up where it shouldn't...very short root system, and in mulched loose soil it was a breeze to pick and choose. However, the second crop came up a bit brighter purple this year, with some almost magenta. Still very pretty, just different. Bees and insects love these and had a ton of goldfinches come through last month to pick off the dried seedheads. I think I am going to try planting along my fence next year as these grow super dense and block out the weeds. They do fall over at the end of the season, so they may need some support to keep them looking nice.
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