Euphorbia clavigera f. persistens - Seed Grown

Euphorbia clavigera f. persistens - Seed Grown - 1 Stem

Do you have one of these rare beauties in your collection? 
These are sold by the stem.
You will receive 1 stem measuring 12-14” tall.
Roots as shown.
This arrangement of 3 is showcased here in Watercolor Series Planter (sold separately). 

To order as shown here, please enter quantity of 3.
Will be shipped bare root.

The botanical name Euphorbia clavigera f. persistens refers to a specific form of the succulent plant Euphorbia clavigera. This plant is native to southeastern Africa and is prized by collectors for its distinctive, radiating branches and caudex (swollen, water-storing root).

Key characteristics:

• Form: This caudiciform succulent develops a thick, underground caudex that can grow up to 12 inches in diameter. Above the ground, it produces tufts of blue-green, ribbed, and spiny branches that can be up to 12 inches long.
• Branches: The stems often have dark green, half-circle spots along their margins, which is a key distinguishing feature of this form.
• Spines: Paired spines of irregular lengths decorate the margins of the branches.
• Flowers: Like other euphorbias, it produces small, inconspicuous golden or greenish-yellow flowers called cyathia.
• Sap: All Euphorbia species produce a white, milky latex sap that is toxic. The sap can cause skin irritation and is poisonous if ingested. 

Growing Conditions & Care:

• Light: Provide maximum sun exposure for the best growth and coloration. It can tolerate full sun but may appreciate some afternoon shade in extremely hot climates.
• Watering: Water thoroughly but allow the soil to dry out completely between waterings to prevent root rot. Overwatering is a common cause of death for euphorbias. Water less frequently during its winter dormancy period.
• Soil: Use a well-drained, gritty soil mix. A cactus or succulent blend with added perlite or coarse sand is ideal.
• Cold tolerance: This is a tender succulent that is not frost-tolerant. It is cold hardy in USDA Zones 9b–11b and should be protected from temperatures below freezing.
• Dormancy: It is a winter-dormant plant, meaning it will slow or stop growing in the colder months. During this time, reduce watering to prevent rot.
• Propagation: Can be propagated from seeds or stem cuttings. Cuttings will not form a caudex unless they are "double cut" after establishing, which encourages the swollen root formation.

Identification:

• The plant is sometimes sold as Euphorbia clavigera, its base species.
• The synonym Euphorbia persistens was previously used for this species and can still be seen in some nurseries and older publications.
• Some enthusiasts note that there are different forms or populations, leading to variations in appearance.