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Polemonium caeruleum hort.

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Approximately 700.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.

1 packet for 4 Euros
in stock *    Polemonium caeruleum hort.    *

Stock items purchased using the shopping cart
are available for immediate shipping
We do not know how many seeds there will be in a packet !
If we know the quantity of seeds, we list the quantity as: examples '200 seeds' or '15 gram', not as packet.




1 gram for 5 Euros
in stock *    Polemonium caeruleum hort.    *

Stock items purchased using the shopping cart
are available for immediate shipping




Polemonium caeruleum hort.
10 gram for 7 Euros
available for preorder


200 seeds for 8 Euros
in stock *    Polemonium caeruleum hort.    *

Stock items purchased using the shopping cart
are available for immediate shipping




2.50 gram for 11 Euros
in stock *    Polemonium caeruleum hort.    *

Stock items purchased using the shopping cart
are available for immediate shipping




Polemonium caeruleum hort.
5 gram for 17 Euros
available for preorder


Polemonium caeruleum hort.
25 gram for 18 Euros
available for preorder


Polemonium caeruleum hort.
50 gram for 30 Euros
available for preorder


Polemonium caeruleum hort.
25000 seeds for 43 Euros
available for preorder


Polemonium caeruleum hort.
100 gram for 54 Euros
available for preorder


Polemonium caeruleum hort.
50000 seeds for 85 Euros
available for preorder


Polemonium caeruleum hort.
100000 seeds for 165 Euros
available for preorder


Polemonium caeruleum hort.
1000 gram for 440 Euros
available for preorder



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Polemonium caeruleum hort.

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 4356

The average, annual, minimum temperature zone where Polemonium caeruleum hort. is cold hardy
USDA Zone:2-
Type of plant - perennial
Flower or inflorescence: BLUE, campan., in panicles, June - July, first year flg.
Foliage: 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
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74:   West Asian Native and Introduced Plants
77:   Central European Native and Introduced Plants
572:  Polemoniaceae
698:   First Year Flowering Perennials
952:   Wholesale Selection


Happier and Healthier Plants, Naturally

plant-fungus communities, for improved nutrition, and disease and drought resistance.


Germination guide for Polemonium caeruleum hort.

These notes are a general guide, it is recommended to check specialist literature for some of the more unusual seeds in our lists.
Seed Germination Theory and Practice by Professor Norman C. Deno
Some knowledge about growing from seed is necessary to germinate even the easiest seeds. Most seeds require humidity to germinate, even desert plants like Welwitschia mirabilis 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.
Some seeds need to be in the light (surface sown) or in the dark (sown deep enough to receive little or no light) to germinate. A rule of thumb is to cover the seeds their own width deep in the growing medium, but some seeds prefer to be sown much deeper, and some fairly large seeds like to be surface sown (or higher).
Many seeds germinate best at certain temperatures, some will germinate at a comparatively wide range of temperatures, yet others need fluctuating temperatures.
Almost all seeds are waiting in a dormant state for some outside stimulus to break their dormancy, some just need sufficiently high ambiant humidity, others need scarification, vernalization or to be passed through the intestines of an animal.

Polemonium caeruleum hort. seeds will usually germinate in 20-25 days.
Sow Polemonium caeruleum hort. seeds about 2mm deep in a Peaty seed sowing mix at about 20°C.

Reduce soil temperature at night.


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