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B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Onosma stellulata is cold hardy
USDA Zone:6 -10° to 0°F (-23.5° to -18°C)
|Type of plant - perennial
Flower or inflorescence:
pale YELLOW, tubular, nodding, in cyme
nutlets in 4s (cycle-stratify)
spath.-obl., to 14x1.5cm., hairy
|Height, in meters: 0.25
Height, in feet: 0.83
|Onosma stellulata 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)|
|42||: Croatian Native and Introduced Plants|
|43||: Herbaceous Border Plant Seed List|
|102||: Eastern European Native Plant Seed List|
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.
Onosma stellulata seeds will usually germinate in 30-60 days.