B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Rudbeckia hirta is cold hardy
USDA Zone:4 -30° to -20°F (-34.5° to -29°C)
|Type of plant - biennial or perennial, depending on climate
Flower or inflorescence:
YELLOW, PURPLE-BROWN disc
cypsela (stratify 1 month)
lance.-oblance., to 10cm.
|Height, in meters: 2
Height, in feet: 6.60
|Rudbeckia hirta sales history
Synonyms (alternative names) for Rudbeckia hirta:
Common names for Rudbeckia hirta:
|(folk:parasites,snakebite,earache), Annual Rudbeckia, Black Eyed Susan, Black-eyed Susan, Marguerite jaune, Yellow Daisy,|
is included in the following
B and T World Seeds flowering plant categories.
|1||: Stock list|
|Our stock changes almost every day, with seeds arriving and being shipped all over the world.|
We only stock long lived seeds, except for a few species that are always in demand.
Seeds that are not in stock are acquired fresh when ordered.
|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|
|53||: Bedding Plant Seed List|
|87||: Natives of Central U.S.A.|
|89||: Natives of U.S.South East|
|185||: Plant Species whose germination is improved by Smoke|
|"Smoke" contains a butenolide compound produced by certain plants when heated, it speeds up or starts the germination of seeds from many different genera.|
|719||: North American Native Ethnobotanicals|
|Including medicinal, dye, fiber, food, construction, ritual|
|952||: Wholesale Selection|
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 hirta seeds will usually germinate in 5-21 days.
Fulgida see No. 14 (Pre-chill for 2 weeks).