Pseudolithos cubiformis. (Asclepiadaceae)
It is a small highly succulent plant that grows into a characteristic, fairly large, granite grey, almost perfect cube. It is quite variable in shape, colur and size.
Sowing: Seed should be sown in spring or during summer, in a well-drained seedling mix, and need only be covered lightly with the sowing mix, clean coarse sand or milled bark. The trays should be kept moist in a warm but shaded position.
Locality: Ex Hort. Harvest: May 2023