[Overview]
Most are evergreen perennials, but some are annuals.
Some have tuberous roots.
The stems branch freely and are either upright or semi-climbing.
The leaves are simple, alternate, opposite or whorled, fleshy, and entire.
The flowers are densely borne on slender spikes; they have no petals and are white to pale green.
The fruit is berry-like.
[Cultivation]
Propagate by division, stem cuttings or leaf cuttings.
Keep it at 10°C or above over winter.
It prefers partial shade and well-drained soil.
Water thoroughly after the soil surface has dried.
From spring to autumn, place slow-release fertilizer on the soil.
Pests and diseases include spider mites and scale insects.
