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Euphorbia rigida


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Euphorbia rigida

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 28411

The average, annual, minimum temperature zone where Euphorbia rigida is cold hardy
USDA Zone:8 10° to 20°F   (-12° to -6.5°C)
Type of plant - perennial
Flower or inflorescence: YELLOW, bracts ORANGE-RED
Fruit: to 8mm. acr., 3 sect. pend. BROWN capsules
Foliage: stem lance., ray obov., colour in autumn - winter..tol. alkaline soil
Height, in meters: 0.45
Height, in feet: 1.48
Euphorbia rigida sales history
Parts of Euphorbia rigida are considered toxic.

Synonyms (alternative names) for Euphorbia rigida:
Euphorbia biglandulosa, 

Common names for Euphorbia rigida:

Narrow-leaved Glaucous Spurge, 


Euphorbia rigida is included in the following
B and T World Seeds flowering plant categories.

46:   Mediterranean Natives and Introduced Plant Seeds
48:   Polish Native and Introduced Plants
57:   Arid and Dry Condition Plant Seed List
78:   South Eastern European Native and Introduced Plants
80:   South West European Native and Introduced Plants
102:   Eastern European Native Plant Seed List
131:   Toxic Plants
Some of the deadliest known poisons are found in plants. Some major food plants, eaten by millions of people every day, have toxic parts.
386:  Euphorbiaceae


Happier and Healthier Plants, Naturally

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


Germination guide for Euphorbia rigida

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.

Euphorbia rigida seeds will usually germinate in 10-15 days, even under good conditions germination may be erratic.
Sow Euphorbia rigida seeds about 6mm deep in a Well drained seed sowing mix at about 25°C.

Pre chill HP for 7 day. Sow in lime-free compost.


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