Cissus rotundifolia

A round-leaved vine from seasonally dry Africa and Arabia

Cissus rotundifolia is a climbing member of the grape family native to eastern Africa and the Arabian Peninsula. Thick, nearly circular leaves and succulent stems give it a more water-storing character than many forest vines.

Wild plants occur in seasonally dry bush, rocky slopes and coastal scrub, using tendrils to climb through shrubs and small trees. Rain can be brief and irregular, the ground is often stony and sunlight reaches much of the foliage. Fleshy leaves and stems preserve moisture between wet periods while the vine uses neighbouring growth for height.

Care for roots and supported growth

Light

Keep the plant directly beside a bright east, south or west window. Deep shade produces long bare spaces and thin leaning growth; sudden fierce midday sun can mark leaves formed under cover.

Watering

Allow the upper half of the mix around Cissus rotundifolia to dry, then soak the complete root ball and drain it. Its fleshy leaves and stems hold water and tolerate a clearer dry interval than Cissus discolor, but repeated severe drought still kills fine roots and drops lower leaves.

Humidity and airflow

Low to average household humidity suits Cissus rotundifolia. Give the vine open airflow after watering or cleaning, whether it climbs or trails.

Fertilising

Apply a balanced foliage or succulent fertiliser at a low dose while Cissus rotundifolia is producing stems and roots. A warm, sunlit plant may remain active and need a light dose outside summer.

Repotting

Repot Cissus rotundifolia when roots fill the drainage area, the vine becomes unstable, water runs through channels or old mix stays wet for too long. Wait briefly before soaking if roots or thick lower stems were damaged.

Support, pruning, handling and leaf care

Cissus rotundifolia can climb a trellis or trail, but guide young stems before they become rigid. Use loose ties and never force a mature bend.

Cissus rotundifolia troubleshooting

The thick round leaves wrinkle

Dry mix with firm green stems points to depleted water reserves and calls for a thorough watering followed by drainage. Damp mix plus wrinkling suggests failing roots. Inspect the base and root system before adding more water, and propagate sound nodes if decay is present.

New leaves become thin and widely spaced

This succulent-leaved vine becomes weak and open in insufficient light. Move it gradually into a brighter position and provide a support close to the active forked tendrils. New leaves should become thicker; old stretched growth will not compact.

Round leaves develop a bleached dry side

Sun scorch follows an abrupt move into intense exposure and usually affects the window-facing surface. A dry fixed scar can remain; protect new growth while the plant acclimatises. Dark, soft or expanding damage instead warrants an immediate rot check.

Forked tendrils dry and fall

A tendril that finds no support may dry naturally and is not a nutrient deficiency. Place a trellis within reach of the next shoot and avoid winding the tendril by force. If the shoot tip also shrivels, check for severe dryness or root loss.

The vine base becomes translucent or soft

Act quickly because decay can travel through the fleshy stem. Cut above the affected section into uniformly firm tissue, discard the wet root ball and let clean cut ends seal briefly before propagation. Do not reuse sour substrate.

Cissus rotundifolia is toxic to cats and dogs

• Keep this plant away from cats and dogs that may chew it.
• Chewing may cause mouth irritation, vomiting, stomach pain or weakness.
• Contact a veterinarian after pet ingestion. Seek medical advice if a person swallows the plant and becomes unwell.

Why is it called Cissus rotundifolia?

Cissus comes from Greek kissos, ivy, a reference to the climbing habit shared by many species in the genus. Rotundifolia combines Latin rotundus, rounded, with folium, leaf.

Carl Linnaeus established the genus Cissus in 1753 in Species Plantarum, page 117.

Jean-Baptiste Lamarck first described Cissus rotundifolia in 1792 in Tableau Encyclopédique, volume 1, page 331.