Scientific Name
Euphorbia flanaganii 'Cristata'
Accepted Scientific Name
Euphorbia flanaganii N. E. Br.
Common Name(s)
Green Coral, Medusa's Head
Synonym(s)
Euphorbia flanaganii f. cristata
Scientific Classification
Family: Euphorbiaceae
Subfamily: Euphorbioideae
Tribe: Euphorbieae
Subtribe: Euphorbiinae
Genus: Euphorbia
Origin
Euphorbia flanaganii 'Cristata' is a form of Euphorbia flanaganii selected for its crested caudex or branches.
Description
Euphorbia flanaganii 'Cristata' is a succulent plant eider with a crested caudex and normal cylindrical branches or crested branches and a normal swollen, partially underground stem. The form with crested branches is more common in cultivation. It can grow up to 6 inches (15 cm) tall and 12 inches (30 cm) wide, forming a clump of fan-shaped branches resembling a wavy emerald green coral.
Hardiness
USDA hardiness zones 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).
How to Grow and Care
Unlike most succulents, Medusa's Head does not handle long periods of drought well. As a result, it may need weekly watering during the summer. Water whenever the soil is dry several inches below the surface. It warns of a lack of water by gradually curling its arms toward the center. Water deeply, but don't let them sit in wet soil, which can cause root rot.
It thrives under direct sun and needs at least 6 hours of direct sun per day for decent health and growth. On brighter subjects, Medusa's Head makes an exceptional container plant that can also be put into gardens so long as it is protected from freezes.
Once it reaches a certain size, a mother plant will produce pups on older arms' ends. The growth starts as a swelling at the end of an arm, and the caudex and arms rapidly grow. After a time, if they don't root on their own, the arm shrivels and allows the pup to roll away, where it rapidly grows if given access to soil and water. If you're not careful, you can end up with a whole greenhouse full of them.
Learn more at How to Grow and Care for Euphorbia.
Links
- Back to genus Euphorbia
- Succupedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
Photo Gallery
Click on a photo to see a larger version.
