Cow's Horn (Euphorbia grandicornis) in the Euphorbias Database

Common names:
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General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun
Minimum cold hardiness: Zone 9b -3.9 °C (25 °F) to -1.1 °C (30 °F)
Plant Height: 6 feet or more
Plant Spread: 6 feet
Fruit: Showy
Pops open explosively when ripe
Flowers: 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.
Flower Color: Yellow
Bloom Size: Under 1"
Suitable Locations: Xeriscapic
Uses: Will Naturalize
Dynamic Accumulator: B (Boron)
Resistances: Drought tolerant
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.
Pollinators: Self
Containers: Suitable in 3 gallon or larger
Needs excellent drainage in pots
Miscellaneous: Tolerates poor soil
With thorns/spines/prickles/teeth

Self fertile

This plant is tagged in:

Posted by Baja_Costero (Baja California - Zone 11b) on Feb 15, 2016 9:58 PM

Well-armed, durable succulent Euphorbia. Tends to branch low down instead of growing a tall main stem. This behavior is especially apparent in seedlings. Seasonal growth pattern, almost all in spring and summer, but very fast when given space and water. Nice yellow flowers. Plant may be self fertile.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Image location by Baja_Costero Sep 11, 2020 8:49 PM 1
Is Euphorbia Ammak Variegated a good houseplant by Sproquita Aug 18, 2019 4:24 PM 4
Euphorbia grandicornis by SavingPatsy Apr 16, 2019 1:59 PM 2
Best collumnar euphorbia from seed by skopjecollection May 25, 2018 11:48 AM 6
Euphorbia grandicornis (Cow's horn) by Jen1973 May 23, 2018 5:49 PM 3
Euphorbia grandicornis (Cow's horn) question by Jen1973 May 23, 2018 9:23 PM 1
2018 Spring Plant Swap - CHAT by RickM Jun 14, 2018 10:12 AM 300
Cactus and succulents chat by Baja_Costero Dec 5, 2020 12:48 PM 9,107
Cow's Horn (Euphorbia grandicornis); hostile looking by bonitin Sep 1, 2015 4:45 AM 3

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