Senecio stapeliiformis

Nice! I have a tiny one. From Lifle website

"Cultivation and Propagation: Senecio stapeliiformis is a
fast grower, good succulent ground cover in frost free zones and also a
great container plant for full sun to partial shade. It is probably a
winter grower and need water from October, when the new leaves can be
seen forming on the growing tip In April the leaves begin to go yellow
and drop off, so now it rests quite dry in to summer. But others suggest
to water it moderately all year round as it tends to be an
opportunistic plant that tend to grow in each time of the year whenever
it has enough water in fair weather and rest when temperatures are too
hot or too cool and may have several or sometimes no growth cycles in a
year. It must be grown very hard in the nursery as close to the natural
conditions as possible. This ensures that it keeps its compact habit.
Due to it's cascading growth habit it is excellent in a hanging basket
or tall pot.
Soil: Give the plant a well drained, airy,
growing medium which mainly consists of non organic material such us
clay, pumice, lava grit, and only a little peat or leaf-mould.
Irrigation:
It prefers to be on the dry side with good but infrequent waterings but
looks best with regular watering in hot months. Less water during
winter. No water should ever be allowed to stand around the roots.
These plants rot off very quickly if over watered.
Hardiness:
Hardy to approx to -5 degrees Celsius, it is cultivated in open air in
the tropical and warm Mediterranean climate, with temperatures which it
is good to keep over the 5°C, best 10-12°C, but can withstand light
frost for short periods if very dry, in these situations it will better
resist if sheltered by the winter rains, seen that the humidity and low
temperatures render it more sensitive to rottenness. Senecio stapeliiformis and its near neighbour Kleinia pendula should be kept very dry until all danger of frost is past. USDA Zone 9b to 12.
Exposure: Full sun to filtered light.
Maintenance:
The flower stems need to be removed to keep a tidy appearance. This
species do tend to get sort of leggy, which is particularly a problem if
grown as a potted plant, and yearly pruning is often necessary to
shape. From time to time it is better to cut out some of the older
growth to make room for the new. Like quite small pots, repot in very
later winter, early spring."