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Ptilotrichum pyrenaicum

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Ptilotrichum pyrenaicum
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1 packet for 17 Euros
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Ptilotrichum pyrenaicum
1 gram for 49 Euros
available for preorder



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Ptilotrichum pyrenaicum

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 432426

The average, annual, minimum temperature zone where Ptilotrichum pyrenaicum is cold hardy
USDA Zone:5-
Type of plant - perennial
Flower or inflorescence: WHITE round pets., in dense corymbs, May - July
Foliage: SILVERY pubescent, tufting
Height, in meters: 0.5
Height, in feet: 1.65
Ptilotrichum pyrenaicum sales history

Synonyms (alternative names) for Ptilotrichum pyrenaicum:
Alyssum pyrenaicum, 


Ptilotrichum pyrenaicum 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
80:   South West 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.
270:  Brassicaceae
709:  Cruciferae


Happier and Healthier Plants, Naturally

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


Germination guide for Ptilotrichum pyrenaicum

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.

Ptilotrichum pyrenaicum seeds will usually germinate in 7-14 days.
Normally will only germinate with light so surface sow. Sow Ptilotrichum pyrenaicum seeds on the surface of a Peaty seed sowing mix at about 10-25°C.

Annuals can be sown in situ.


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