tweet Follow us on twitter  

Terms of Trade

Contact - eMail

Catalogues




log in or create an account


Printer ready version of Rudbeckia subtomentosa information

Information and prices for
Rudbeckia subtomentosa

Approximately 1536.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.

Click a button to add that quantity to your cart
seed quantities can be multiplied when added to the cart

Rudbeckia subtomentosa
1000 seeds for 8 Euros
available for preorder


Rudbeckia subtomentosa
500 seeds for 8 Euros
available for preorder


Rudbeckia subtomentosa
We do not know how many seeds there will be in a packet !
If we know the quantity of seeds, we list the quantity as:
examples '200 seeds' or '0.50 gram', not as packet.
1 packet for 8 Euros
available for preorder


Rudbeckia subtomentosa
1 gram for 10 Euros
available for preorder


Rudbeckia subtomentosa
3.50 gram for 12 Euros
available for preorder


Rudbeckia subtomentosa
7 gram for 14 Euros
available for preorder


Rudbeckia subtomentosa
14 gram for 20 Euros
available for preorder


Rudbeckia subtomentosa
28 gram for 28 Euros
available for preorder


Rudbeckia subtomentosa
10 gram for 68 Euros
available for preorder


Rudbeckia subtomentosa
100 gram for 525 Euros
available for preorder



If seeds of Rudbeckia subtomentosa
are not available in the quantity you need
Please click here.

Rudbeckia subtomentosa

Search Google for pictures
of Rudbeckia subtomentosa

The search will open a new browser window

If you can give us a picture of Rudbeckia subtomentosa please send it to Matthew



Elements of Structural and Systematic Botany
B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 74941

The average, annual, minimum temperature zone where Rudbeckia subtomentosa is cold hardy
USDA Zone:5 -20° to -10°F   (-29° to -23.5°C)
Type of plant - perennial
Flower or inflorescence: YELLOW, PURPLE-BROWN centre, 8cm. cap.
Fruit: (stratify 8 weeks te germ. in 2 weeks warm, or GA-3, to germ. in 2-8 weeks)
Foliage: ovate, to 13cm., tern.....likes moist soil, not wet
Height, in meters: 1.3
Height, in feet: 4.29
Rudbeckia subtomentosa sales history

Common names for Rudbeckia subtomentosa:

Sweet Black-eyed Susan,  Sweet Coneflower, 


Rudbeckia subtomentosa is included in the following
B and T World Seeds flowering plant categories.

43:   Herbaceous Border Plant Seed List
55:   Fragrant or Aromatic Flower or Foliage Plant Seeds
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.
246:  Asteraceae
708:  Compositae
719:   North American Native Ethnobotanicals
Including medicinal, dye, fiber, food, construction, ritual


Happier and Healthier Plants, Naturally

plant-fungus communities, for improved nutrition, and disease and drought resistance.


Germination guide for Rudbeckia subtomentosa

These notes are a general guide, it is recommended to check specialist literature for some of the more unusual seeds in our lists.
Seed Germination Theory and Practice by Professor Norman C. Deno
Some knowledge about growing from seed is necessary to germinate even the easiest seeds. Most seeds require humidity to germinate, even desert plants like Welwitschia mirabilis 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.
Some seeds need to be in the light (surface sown) or in the dark (sown deep enough to receive little or no light) to germinate. A rule of thumb is to cover the seeds their own width deep in the growing medium, but some seeds prefer to be sown much deeper, and some fairly large seeds like to be surface sown (or higher).
Many seeds germinate best at certain temperatures, some will germinate at a comparatively wide range of temperatures, yet others need fluctuating temperatures.
Almost all seeds are waiting in a dormant state for some outside stimulus to break their dormancy, some just need sufficiently high ambiant humidity, others need scarification, vernalization or to be passed through the intestines of an animal.

Rudbeckia subtomentosa seeds will usually germinate in 5-21 days.
Normally will only germinate with light so surface sow. Sow Rudbeckia subtomentosa seeds on the surface of a Peaty seed sowing mix at about 20°C.

Fulgida see No. 14 (Pre-chill for 2 weeks).


Terms of Trade - Price-Codes - Contact - eMail - Other Seed Lists

Botanical name Search

Common Name Search