B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Phyteuma sieberi is cold hardy
USDA Zone:6 -10° to 0°F (-23.5° to -18°C)
|Type of plant - perennial
Flower or inflorescence:
deep BLUE, glob. infl. with serr. bract
lower ovate to narr. ell.
|Height, in meters: 0.1
Height, in feet: 0.33
|Phyteuma sieberi sales history
is included in the following
B and T World Seeds flowering plant categories.
|9||: Alpine and Rock Garden Seed List (Hardy and Tender)|
|43||: Herbaceous Border Plant Seed List|
|77||: Central 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.
Phyteuma sieberi seeds will usually germinate in 30-90 days, even under good conditions germination may be erratic.
Phyteuma sieberi seeds will mostly germinate as the weather warms up in Spring, some may germinate during the Summer or Autumn but are more likely to stay dormant until the following Spring.