Crown of thorns by ♥⊱ B. Randi Bailey

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Medium 18.0" x 12.0"
Large 24.0" x 16.0"
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Crown of thorns plant prominently showing its red flowers. Captured in Largo, Florida, USA, at the Florida Botanical Gardens. 523 views as of Dec. 26, 2012

Featured in—High Quality Images-Sept. 13, 2010

Featured in—Wildllowers of North America-Dec. 26, 2012

Old view history
100 views as of Feb. 12, 2011
247 views as of Jan. 20, 2012

From this veterinarian website

Plant Description-General Info

A low-growing evergreen shrub with very thorny grooved stems and branches. The stems are purplish brown and are 1-2 feet tall on average, but can reach 3 feet in a warm climate. The thorns are sharp pointed and are 1/2 inch long on avarage. The ovate leaves are 1-3 inches long, few in number, and are found mostly at the growing ends. The cyathia, a type of inflorescence characteristic of the genus Euphorbia, are born in small umbels and have showy, ovate and bright red bracts. The small flowers are produced in clusters of 2-8 at the tips of green flower stem about 1 inch long. Genus Euphorbia includes other commonly available plants such as poinsettia (E. pulcherrima) and snow-on-the-mountain (E. marginata).

A native of Madagascar, crown of thorns is widely grown as a house plant in northern states including Illinois, and as a common garden plant in southern states, especially Florida.

About its Toxicity-I’ve done some cutting and pasting here

Conditions of poisoning
The poisonous principle is present in all parts of the plant. Euphorbia species generally are highly unpalatable, but animals may eat them due to lack of good forage. Drying does not destroy the toxicity of the plant, and Euphorbia in hay may be slightly more palatable to livestock. Contact with the white, milky sap may cause severe blistering as well as intense pain to open cuts or eyes. Honey made from the flowers of these plants may be toxic.

Toxic principle
The poisonous principles have been identified as phorbol esters. Phorbol esters activate protein kinase C. Protein phosphorylation is increased by protein kinase C which may alter multiple enzyme and other protein functions. Effects may result in cytoskeletal damage and tumor promotion.

Clinical signs
Generally horses, cattle, sheep, cats, dogs and humans are affected by Euphorbia and may experience severe irritation of the mouth and gastrointestinal tract, sometimes with hemorrhage and diarrhea. Other general signs include blistering, swelling about the eyes and mouth, excessive salivation and emesis, abdominal pain and weakness. The sap may cause dermatitis. Death is rare. Work horses may suffer severe blisters and loss of hair on the ankles. Approximately 3 kg of E. prostrata and E. marginata when fed to cattle produces severe scours and emaciation.

Other flowers with red highlights from my gallery


Very spherical hibiscus

Perky bunch

Refreshing red rose

Photographer and digital artist. All images are copyrighted.

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  • LoneAngel
    LoneAngelover 4 years ago

    very pretty shot

  • Thank you, Angel! Sometimes you plan and think a while before you get a shot you were hoping for!

    – ♥⊱ B. Randi Bailey

  • Rainy
    Rainyover 4 years ago

    Lovely shot Randi!

  • Thank you, Rainy! Your “Morning Glory” capture is really a stand-out!

    – ♥⊱ B. Randi Bailey

  • paintingsheep
    paintingsheepover 4 years ago

    Wonderful color and beautiful light..Excellent work!

  • Thank you! I love the way you show all your top ten and feature pieces on your gallery page! Kinda in overflowing mode, now, LOL. Keep up the good work!

    – ♥⊱ B. Randi Bailey

  • pat gamwell
    pat gamwellover 4 years ago


    FEATURE PAGE: Red, White & Blue

  • Thank you, Pat! I am honored!

    – ♥⊱ B. Randi Bailey

  • rocamiadesign
    rocamiadesignover 4 years ago

  • You’re welcome!

    – ♥⊱ B. Randi Bailey

  • artisandelimage
    artisandelimageover 4 years ago

    All Around Florida Group

  • You’re very welcome!

    – ♥⊱ B. Randi Bailey

  • Helen Akerstrom Photography
    Helen Akerstro...over 4 years ago

    Beautiful and deadly!

  • UH-OH…I’m thinking of putting some info up then-poisonous to dogs and cats, I see; yuck! Thanks for letting me/us know! I don’t have these in my yard, thankfully.

    – ♥⊱ B. Randi Bailey

  • Ray Clarke
    Ray Clarkeover 4 years ago

  • xox

    – ♥⊱ B. Randi Bailey

  • Vickie Emms
    Vickie Emmsabout 4 years ago

    beautiful capture Randi!

  • Thanks so much, Vickie! I’d love to add it to your group if it would qualify, but not sure it would since they have now become common garden and houseplants…? I really appreciate your support for my artwork!

    – ♥⊱ B. Randi Bailey

  • lorilee
    lorileeover 2 years ago

    Congratulations!! Your BEAUTIFUL image is being FEATURED
    in the group, “Wildflowers of North America!!”

  • Thank you so very much, Lori…I hope you are enjoying your holidays!

    – ♥⊱ B. Randi Bailey

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