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Approximately 140.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Rudbeckia maxima is cold hardy
|Type of plant - perennial
Flower or inflorescence:
large YELLOW with BLACK centre cone, on tall stems
BLUE-GREEN, rh.-ov., to 12cm.long
|Height, in meters: 2
Height, in feet: 6.60
|Rudbeckia maxima sales history
Common names for Rudbeckia maxima:
|Giant Coneflower, Great Coneflower,|
is included in the following
B and T World Seeds flowering plant categories.
|36||: Herb Seed List Culinary Medicinal Dye and Aromatic|
|Not all medicinal, dye or aromatic plants are edible, some are toxic if eaten and others are dangerous if applied to the skin. Please check uses for plants.|
|43||: Herbaceous Border Plant Seed List|
|44||: Cut flowers Commercial and other Recommended Varieties|
|76||: Californian Native Plant Seed List|
|85||: Natives of U.S.South West (Arizona Texas New Mexico)|
|87||: Natives of Central U.S.A.|
|89||: Natives of U.S.South East|
|719||: North American Native Ethnobotanicals|
|Including medicinal, dye, fiber, food, construction, ritual|
Some knowledge about growing from seed is necessary to germinate even the easiest seeds.
Most seeds require humidity to germinate, even desert plants like
require that their growing medium remains moist until germination.|
Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet,
the seeds may not get the oxygen they require.
Rudbeckia maxima seeds will usually germinate in 5-21 days.
Fulgida see No. 14 (Pre-chill for 2 weeks).