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Centaurea macrocephala

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Approximately 125.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.

Centaurea macrocephala
25 gram for 10 Euros
available for preorder

Centaurea macrocephala
5 gram for 10 Euros
available for preorder

Centaurea macrocephala
10 gram for 12 Euros
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Centaurea macrocephala
100 gram for 21 Euros
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Centaurea macrocephala
250 gram for 45 Euros
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Centaurea macrocephala
500 gram for 83 Euros
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Centaurea macrocephala
1000 gram for 125 Euros
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Centaurea macrocephala
2500 gram for 439 Euros
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Centaurea macrocephala
5000 gram for 511 Euros
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Centaurea macrocephala
10000 gram for 914 Euros
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Centaurea macrocephala

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 39731

The average, annual, minimum temperature zone where Centaurea macrocephala is cold hardy
USDA Zone:6 -10° to 0°F   (-23.5° to -18°C)
Type of plant - perennial
Flower or inflorescence: LEMON-YELLOW, to 5.5cm. dia. thistles, BRONZE buds - bracts, cutflower
Fruit: (germ. 1-3 weeks)
Foliage: large GREY-GREEN
Height, in meters: 1.4
Height, in feet: 4.62
Centaurea macrocephala sales history

Common names for Centaurea macrocephala:

Big-head Knapweed,  Giant Knapweed,  Globe Cornflower,  Golden Thistle,  Great Golden Knapweed,  Greater Golden Knapweed,  Grosskopfige Flockenblume,  Yellow Hardhead, 

Centaurea macrocephala is included in the following
B and T World Seeds flowering plant categories.

19:   Everlasting and Dried Flower Seeds Australian and Other
43:   Herbaceous Border Plant Seed List
44:   Cut flowers Commercial and other Recommended Varieties
45:   Bee and Butterfly Attracting also Honey and Pollen Plant Seeds
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
952:   Wholesale Selection

Happier and Healthier Plants, Naturally

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

Germination guide for Centaurea macrocephala

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.

Centaurea macrocephala seeds will usually germinate in 7-14 days.
Normally germinates in the dark. Sow Centaurea macrocephala seeds about 2mm deep in a Well drained seed sowing mix at about 15-20°C.

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