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Rudbeckia maxima |
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| Common name |
giant coneflower |
| Family |
asteraceae |
| Life cycle |
perennial |
| Flowers |
yellow (early summer) |
| Size |
6' |
| Light |
full sun |
| Cultural notes |
ordinary garden soil |
From seed  |
germinate at room temperature
detailed seed-starting info below
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| Seed ripens | early October |
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| This yellow coneflower grows from a rosette of large bluish-green leaves. In late spring, it sends up a sturdy, tall stalk with, way at the top, flowers whose most prominent feature is the dark central conical disk, which juts out further than on most other coneflowers.
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In our garden, this plant grows in the following area: back yard island About my plant portraits
Visitors to this page have left the following comments| Susan Borchard | Oct 13, 2004 | Hi, I've got to have this. I have giant sunflower seeds from a sunflower over 15 feet tall. Yellow Horn Tree seeds, Fuzzy-Leaved Orange Poppy seeds, Trichostema Lanatum, Persimmon Tree seeds. Would you trade any of those for some of your Giant Coneflower seeds? PLMK @ sborchard@socal.rr.com Thank you and what amazing photos and you are a genius. I don't know where you get the time.
Susan (Maybe the genius comment will get me the seeds!) LOL |
| mike | Aug 01, 2005 | I have some if antbody wants some |
| Jackie Adams | Oct 18, 2005 | I'm jazzed to try the Rudbeckia Maxima in '06. Any chance this year's yield will be viable? Thanks for the site.
I'm not too hopeful - I'll be trying for myself, but wouldn't trade until I have more confidence in viability... |
| PD Wythe-Mn | Aug 23, 2008 | My R. maxima seems to be bi-annual, ie, blooms every other year. I have five plants so far and 3 are dormant this year but they bloomed last year. By dormant, I mean they have basal leaves but no stalks. I assume they are gathering strength this year for next years' extravaganza. Do your plants act this way?
I've found it difficult to keep them alive past their first year of bloom - which often doesn't arrive till their third year of life. I know they should be longer-lived, so there must be something my garden and I are doing wrong. |
- Seed from '02 trade. Baggy 70F (50%G, 5-16d)
- Seed from '04 garden. Baggy 70F (5%G, 7d). Apparently most of the seeds I collected were duds. Will look harder at the seedheads next year
- Seed from '06 garden. Lots of seeds to a pot at 70F. 1 germinated, in 7d
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Last modified:
March 11, 2007
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