Fockea multiflora

Fockea multiflora is a semi-succulent climber in the dogbane family (Apocynaceae, formerly Asclepiadaceae), found in the seasonally dry tropics of south-central Africa, including Tanzania, Malawi, Mozambique, Zambia, Zimbabwe, Angola, Botswana and Namibia, on low hills and among rocks around their bases at about 600–1,000 m. Of the six Fockea species it is the second most widespread. While the other five are small climbers with large underground tubers, this species has no tuber and becomes a massive woody liana up to 15 m long; large specimens are probably the biggest members of the milkweed subfamily. The trunk thickens toward the base to about 30 cm, and mature plants have a network of fleshy roots radiating from it. Damaged stems exude a white latex. Young stems are woolly and later develop grey, shiny bark. The opposite leaves are broadly elliptic, about 10 cm long, with grey-felted undersides. Clusters of up to about 30 flowers, each about 15 mm across, grey-green outside and yellow-green to brown inside, form in the leaf axils. It is known in English as python vine. Published cultivation information is scarce. In Japan potted plants and seed are sold online as a large species distinct from the tuberous Fockea edulis.

Source: Wikipedia (CC BY-SA 4.0)

The Fockea multiflora grows to Stems up to 15 m long with a trunk about 30 cm thick in the wild; stays small in a pot.

Light feeding in the growing season