Euphorbia ‘Blue Haze’-Spurge

Euphorbia ‘Blue Haze’ on 5-1-09, #12-30.

‘Blue Haze’ Spurge

Euphorbia ‘Blue Haze’ PPAF

Euphorbia seguieriana subsp. niciciana x Euphorbia nicaeensis


I bought my Euphorbia ‘Blue Haze’ from Lowe’s in May 2009. It did very well in the bed next to the old goldfish pool in the backyard of the mansion. This plant prefers to grow in full sun but appreciates afternoon shade in warmer climates. and grows to around 15-18 inches tall. I am not sure when it happened, but this plant died somewhere along the way. Maybe when the rains came in the fall. It was fine, then one day it was just gone.

Euphorbia ‘Blue Haze’ was the creation of Anthony Robin White in Alresford, England in 2000. The new cultivar was the result of a cross between Euphorbia seguieriana subsp. niciciana as the seed parent and Euphorbia nicaeensis as the pollen parent. The offspring was selected for its powder-blue foliage and yellow to yellow-green flowers. They are distinguished from Euphorbia seguieriana having red stems, broader leaves, and yellow flower bracts.

The description of ‘Blue Haze’ was made from observing plants between 12 to 15 months of age in Arroyo Grande, California and the patent was applied for in 2002.


Euphorbia seguieriana subsp. niciciana (Borbás ex Novák) Rech.f. was named and described by Karl Heinz Rechinger in Annalen des Naturhistorischen Museums in Wien in 1948. It was previously described as Euphorbia niciciana Borbás ex Novák by Vincze (Vincent, Vince) Borbás and ex-author Frantiaek Antonín Novák in Preslia in 1927. It was decided this species was a subspecies of Euphorbia seguieriana.

Euphorbia seguieriana Neck. is the correct and accepted scientific name for the species. It was first described by Nöel Martin Joseph de Necker in 1770. (The title of the publication is so long!).

The correct and accepted scientific name of the other parent is Euphorbia nicaeensis All.. It was first described by Carlo Allioni in Flora Pedemontana sive Enumeratio Methodica Stirpium Indigenarum Pedemontii in 1785. Latin meaning is “of or from Iznik (formerly Nicaea), Turkey.

Plants of the World Online by Kew lists 1.980 accepted species in the Euphorbia genus (as of 11-27-18 when this page was updated. Last time I checked there were 2,004). Version 1.1 of The Plant List named 2,046 species in 2013 (plus an additional 144 accepted infraspecific names), 3,522 synonyms of species rank (plus 1,592 infraspecific synonyms), and 94 unresolved names. The Plant List is now unmaintained but it is still a great source of information. You can compare it with current statistics to see progress. World Checklist of Selected Plant Families (WCSP) lists 5,401 names but most are synonyms. I am not going to go down the list and count all the accepted names. WCSP is also a Kew venture.

Family: Euphorbiaceae
Type: Herbaceous perennial
Origin: Hybrid
Zones: USDA Zones 5a-10 (-20-30° F)
Size: 18” tall x 24” wide
Light: Full sun
Soil: Well-drained
Water: Average to dry. Drought tolerant

Maybe someday I will find another Euphorbia ‘Blue Haze’ and try it again here on the farm then I can write a better description, give my experiences, and have lots of photos.

I hope you enjoyed this page and maybe found it useful. If you have any comments, questions or suggestions, I would like to hear from you. Please click on “like” if you visited this page. It helps us bloggers stay motivated. 🙂 You can check out the links below for further reading. The links take you directly to the genus and species of this plant. If you notice I made an error, please let me know.


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