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Approximately 700.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Polemonium caeruleum hort. is cold hardy
|Type of plant - perennial
Flower or inflorescence:
BLUE, campan., in panicles, June - July, first year flg.
alt., pinn., narr. lfts. in ladder config., borders
|Height, in meters: 0.9
Height, in feet: 2.97
|Polemonium caeruleum hort. sales history
Synonyms (alternative names) for Polemonium caeruleum hort.:
|Polemonium pulchellum Turcz.,|
Common names for Polemonium caeruleum hort.:
|Blaue Himmelsleiter, Charity, Greek Valerian, Jacob's Ladder, Jakobsleiter, Valeriane grecque,|
Polemonium caeruleum hort.
is included in the following
B and T World Seeds flowering plant categories.
|1||: Stock list|
|Our stock changes almost every day, with seeds arriving and being shipped all over the world.|
We only stock long lived seeds, except for a few species that are always in demand.
Seeds that are not in stock are acquired fresh when ordered.
|12||: British Native Wild Flowers Shrubs and Trees|
|34||: Oriental Herb and Vegetable Seed List|
|Not all Oriental Herbs are Culinary, or even edible. Be sure to correctly identify and prepare all herbs and vegetables before use.|
|36||: Herb Seed List Culinary Medicinal Dye and Aromatic|
|Not all medicinal, dye or aromatic plants are edible, some are toxic if eaten and others are dangerous if applied to the skin. Please check uses for plants.|
|38||: Indian Native and Introduced Plants|
|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|
|56||: Aquatic and Semi aquatic Plant Seeds|
|74||: West Asian Native and Introduced Plants|
|77||: Central European Native and Introduced Plants|
|698||: First Year Flowering Perennials|
|952||: Wholesale Selection|
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.
Polemonium caeruleum hort. seeds will usually germinate in 20-25 days.
Reduce soil temperature at night.