Approximately 110.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
USDA average, annual, minimum temperature Zone:6
Type of plant - perennial
Flower: bright SKY-BLUE globular heads
Foliage: divided, WHITE lan. ben., stems SILVERY (white woolly)
Height in meters: 0.6-1
Common names for Echinops ritro ssp ruthenicus Platinum Blue c.s.:
Echinops ritro ssp ruthenicus Platinum Blue c.s.
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
51: Chinese Native and Introduced Plants
72: Russian Native and Introduced Plants (Central)
102: Eastern European Native Plant Seed List
185: Plant Species whose germination is improved by Smoke
Echinops ritro ssp ruthenicus Platinum Blue c.s. seeds will usually germinate in 15-60 days. Sow seeds about 2mm deep in a Peaty seed sowing mix at about 22°C.