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Rhaponticum coniferum |
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| Synonym(s) |
Centaurea conifera |
| Family |
asteraceae |
| Life cycle |
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| Flowers |
purple (late spring-summer) |
| Size |
6-12" |
| Light |
sun |
| Cultural notes |
rich, well-drained soil |
From seed  |
germinate at room temperature
detailed seed-starting info below
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Thistle-like plant, not commonly cultivated. I'm giving it a try to see what it's like. Just seedlings for now – the photo here shows a first-year plant in early July. I haven't found a good reference for its hardiness, but suspect it may not be up to the zone 6 winters of our Pennsylvania garden. Whatever the cause, I never managed to get it to overwinter. Trying again in Texas...
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We're re-establishing this plant this year (it used to grow in our garden, but slipped away) About my plant portraits
PlantLinks to other web pages about Rhaponticum coniferum
- Seed from NARGS '12/'13 exchange. Baggy 70F (82%G, 4-6d)
- Same seed as above. Baggy 70F (100%G, 4-11d)
- Seed from NARGS '24/'25 exchange. Baggy 70F (100%G, 3-9d)
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Last modified:
January 24, 2026
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