Euphorbia coerulescens


As the Euphorbia coerulescens matures, it slowly forms into a branched shrub. Stems are quadrangular or hexagonal with edges covered in stiff thorns. This species is indigenous to South Africa (Cape Province, Noorsveld area). USDA hardiness zone 9b - 11. Flowers are a beautiful bright yellow. Mature height 4'. Mature width 3'. Thrives in partial shade to sun. Water moderately during the summer months. Keep your friend dry during the winter months. Suitable for xeriscaping.


Euphorbia virosa
Euphorbia coerulescens hort.
Euphorbia virosa var. caerulescens (Haw.) A.Berger

Plant Details
USDA Zone Information: 
9b - 11
Flower : 
Ideal Light Conditions: 
Partial shade to sun
Ideal Water Conditions: 
Moderate in summer/Dry in winter
Speed of Growth: 
Mature Height: 
Mature Width: 
Latin Name: 
Euphorbia coerulescens
Common Name: 
Sweetnoors, Sweetnoor, Blue Euphorbia, Sweet Noor Succulent

Corporate Clients (The King hangs hard)


RoboCop (1987)
RoboCop 2 (1990)
Hot Pursuit (2015)


USA Network's Queen of the South (2019)

Botanical Gardens:

New York Botanical Gardens
Oklahoma City Zoo/Botanical Gardens
Mercer Arboretum in Houston, Texas
Meijer Gardens in Grand Rapids, Michigan


Houston, TX Zoo
San Antonio, TX Zoo

Other Clientele:

Houston, TX Rodeo

The Cactus King's cacti and succulents have gone international! If you ever find yourself in China with a little spare time, head to the Chimelong Ocean Kingdom. It is the largest Aquarium in the world (no big deal, pun definitely intended).

The Cactus King's plants are also featured in the Chimelong Ocean Kingdom's partner parks. These include their water park, amusement park, crocodile park and botanical gardens.

Wholesale/Retail Hours

Monday through Saturday: 9am - 5:30pm

Sunday: Closed

Interested in becoming The King of wholesalers? Click the "Wholesale" tab above for more information.

Find your dream plant!

Addresses & Contact Information

Physical Address (IN-PERSON VISITS):
7900 I-45N
Houston TX, 77037

We're located directly next to the Tajj Inn.
Mailing Address (WEB ORDER PAYMENTS):

Lyn Rathburn
PO Box 16099
Houston, TX 77222

Please make checks/money orders out to "Lyn Rathburn."
Questions? Concerns? The CK team is here to help!

For assistance, please: Call
(281) 591-8833 or