B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Centaurea calcitrapa is cold hardy
USDA Zone:6 -10° to 0°F (-23.5° to -18°C)
|Type of plant - perennial
Flower or inflorescence:
RED-PURPLE, 8-10mm. dia.
|Centaurea calcitrapa sales history
Common names for Centaurea calcitrapa:
|Abre Puno, Cardo Estrelado, Centauree chausse-trape, Ippofesto, Purple Star Thistle, Red Star Thistle, Red Star-thistle, Red Star-thistle, Star Thistle, Stern-Flockenblume,|
is included in the following
B and T World Seeds flowering plant categories.
|12||: British Native Wild Flowers Shrubs and Trees|
|43||: Herbaceous Border Plant Seed List|
|45||: Bee and Butterfly Attracting also Honey and Pollen Plant Seeds|
|103||: Western European Native and Introduced Plants|
|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.|
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.
Centaurea calcitrapa seeds will usually germinate in 7-14 days.