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Sorbus californica

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 401659

The average, annual, minimum temperature zone where Sorbus californica is cold hardy
USDA Zone:6 -10° to 0°F   (-23.5° to -18°C)
Type of plant - shrub to tree
Fruit: ROSE-PINK pomes
Foliage: 7-11 ovate 6-8cm. lg. lfts.
Height, in meters: 2
Height, in feet: 6.60
Sorbus californica sales history

Common names for Sorbus californica:

California Mountain Ash, 


Sorbus californica is included in the following
B and T World Seeds flowering plant categories.

2:   Wants
We are looking for seeds from this plant, if you know where we can find seeds or would like to be told when we have a source, please let me know.
29:   Temperate Forest and Woodland Tree and Shrub Seed List
40:   Shrub Seed List, Hardy and Tender
76:   Californian Native Plant Seed List
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.
597:  Rosaceae


Happier and Healthier Plants, Naturally

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


Germination guide for Sorbus californica

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.

Sorbus californica seeds will usually germinate in 120-180 days, even under good conditions germination may be erratic.
Normally will only germinate with light so surface sow. Sow Sorbus californica seeds on the surface of a Well drained seed sowing mix at about 20°C.

Sorbus californica seeds need to be "overwintered" before they will germinate.

Stratification; cold treatment or vernalization. Seeds of some species need just a couple of weeks, others 3 months. Seeds can be stratified in dampened peat or sand, in a plastic box or bag at 4°C or 5°C in a refrigerator. The seeds should not be frozen or in a wet medium. Very small seeds can be sown on the surface of their growing medium, in pots sealed in plastic bags, and kept in the 'fridge. Many vernalized seeds need light to germinate when they are sown in the "Spring".
Seed Germination Theory and Practice by Professor Norman C. Deno

(Pre-chill for 4 months).


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