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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 |
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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| | Leaves clasp the stem in an elegant way |
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We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston. About my plant portraits
PlantLinks to other web pages about Rudbeckia maxima
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. |
| rebecca hall | Jan 17, 2010 | I have been attempting to find ridbeckia maxima seeds. If anyone can assist me I would be greatly appreciative. Rebecca Hall llahmr@aol.com Thanks so much! |
| Sheri | Aug 22, 2010 | I have had trouble germinating rudbeckia maxima too. I now know that it must be sown fresh. Put a small amount of sharp sand in a jar, add the seeds and then shake it up like a cocktail for 5 minutes. Spread the seed + sand mixture on top of compost and do not cover further. Put all in plastc bag to retain moisture. Seeds are available from Derry Watkins www.specialplants.co.uk |
| Bre'Naysia | Nov 15, 2011 | I think this website is the best for looking up the rudbeckia maxima plant!thank you! |
- 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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