The string of watermelon is very drought tolerant when established, don't ever let it sit in water.
Always use a very draining potting mix and feed in summer.
Sold in a 12cm diam grow pot - Height approx 12cm w. pot
String of Watermelon - Senecio Herreianus
Light: A sunny spot, the phosporescent lines on their beads are to capture light
Water: Water lightly especially when dormant, feed annually during the growing period
Temperature: Protect from frost, they will enjoy the outdoors in summer