Wikstroemia polyantha grows as a small tree up to 7 metres (20 ft) tall, with a stem diameter of up to 8 centimetres (3 in).

Inflorescences bear at least six flowers which are yellow, yellowish green or white.

The specific epithet polyantha is from the Greek meaning 'many flowers'.

Habitat is forests from sea-level to 2,200 metres (7,000 ft) altitude.

W. polyantha is found in Malaysia, Indonesia and the Philippines.