This grower is sure of this plant identification.
This "cactus-like" succulent seems to be more tolerant of the cold and less prone to rot than most Euphorbia species. May be suitable for the cool greenhouse.
Euphorbia resinifera (Spurge). This is a succulent species will produce a blue-grey clump it will grow to about 60cm high or more and about 2m wide.
It is rather spiny, so watch out.
Grown for its flowers which are great in borders. Suitable for coastal conditions.
Italics = data drawn from parent genus or speciesView Full Plant Finder Record