Euphorbia (Euphorbia poissonii) in the Euphorbias Database

General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Minimum cold hardiness: Zone 10a -1.1 °C (30 °F) to +1.7 °C (35 °F)
Plant Height: Up to 6-10 feet
Leaves: Deciduous
Fruit: Pops open explosively when ripe
Flowers: Inconspicuous
Other: In the genus Euphorbia, the flowers are reduced in size and aggregated into a cluster of flowers called a cyathium (plural cyathia). This feature is present in every species of the genus Euphorbia but nowhere else in the plant kingdom.
Bloom Size: Under 1"
Flower Time: Spring
Suitable Locations: Xeriscapic
Dynamic Accumulator: B (Boron)
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Other: All members of the genus Euphorbia produce a milky sap called latex that is toxic and can range from a mild irritant to very poisonous.
Containers: Needs excellent drainage in pots
Miscellaneous: With thorns/spines/prickles/teeth

Photo courtesy of 'Out of Africa', used with permission

Photo gallery:

Posted by Baja_Costero (Baja California - Zone 11b) on Jul 10, 2018 12:12 AM

Shrubby West African succulent Euphorbia with fat white stems, deciduous green leaves, and small spines. One member of a group of similar plants, including E. unispina, darbandensis, sapinii, and venenifica, with a common shape and habit. These plants have an unusually toxic sap, which was used traditionally for poisoning animals. Avoid contact with the sap.

Requires strong light and excellent drainage. Does well in small containers, given occasional bumps up in size. Slow growing, with a marked seasonal pattern of new growth only in the summer and fall. Enjoys more regular water during active growth. May retain some of its leaves year round, or lose them all in winter. Tiny unisexual cyathia appear on the stems in winter and spring.

Grown from seed, which requires male and female plants to produce. Uncommon in cultivation. Branches regularly from the base and higher up. Quite striking in old age. Spineless forms have been bred.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Euphorbia mix? by BrendanCS Jul 13, 2018 3:56 PM 36

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