The flower of Pelargonium alchemilloides is small, only 1,5 cm to 2 cm in diameter. Its colour may be white, yellow, pink or more, usually with narrow, oblong petals. The petal tips may be rounded, rectangular or slightly two-lobed; variable on the same plant or flower as seen here. There may be small pink markings of varying shade on the upper two petals, sometimes appearing as only a few fine lines.

The five narrow green sepals with their acutely pointed tips are shorter than the petals. The sepals are covered in short, velvety hairs. The calyx tube varies between 1,5 cm and 3,5 cm in length. There are small hairy bracts at the base of the umbel.

The pedicels of individual flowers may be reddish or yellow-green, sparsely covered in tiny hairs. The peduncle of the umbel varies notably in length; sometimes quite long.

The pink to purple style has five tiny stigma branches.

Flowering usually happens in spring, but may continue to early autumn (Manning, 2009; Vlok and Schutte-Vlok, 2010; Blundell, 1987).