Elkhorn (Euphorbia lactea 'Cristata') in the Euphorbias Database

Common names:
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General Plant Information (Edit)
Plant Habit: Cactus/Succulent
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Minimum cold hardiness: Zone 10b +1.7 °C (35 °F) to +4.4 °C (40 °F)
Maximum recommended zone: Zone 11
Leaves: Deciduous
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.
Suitable Locations: Xeriscapic
Alpine Gardening
Uses: Will Naturalize
Dynamic Accumulator: B (Boron)
Resistances: Deer Resistant
Rabbit Resistant
Toxicity: Leaves are poisonous
Roots are poisonous
Fruit is poisonous
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.
Propagation: Other methods: Cuttings: Stem
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Needs excellent drainage in pots
Prefers to be under-potted
Miscellaneous: With thorns/spines/prickles/teeth

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Comments:
Posted by SongofJoy (Clarksville, TN - Zone 6b) on Mar 12, 2012 5:28 AM

Euphorbia lactea is a cactus-like succulent plant with 3 or 4-angled branches that are deeply scalloped and have black spines. It is used medicinally in India.

All plant parts are considered to be poisonous, especially the white, milky sap which is irritating to the skin, eyes and mouth.

The plant should be allowed to dry thoroughly between waterings. In the winter months, water should be restricted to once a month in order to avoid plant failure. Rot is the biggest cause of failure in this plant.

Euphorbia lactea "Cristata" is an intricately monstrous form with fan-shaped crested branches forming a ridge or crowded cluster. The crest form is often used in grafting.

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