Geranium pusillum aka Small Flowered Cranesbill

Geranium pusillum has the common name small-flowered cranesbill. It is part of the geranium family, Geraniaceae. Kew gives its native range as Europe to the western Himalaya. The RHS confirms it is native to Britain and Ireland. It grows in regions with a temperate climate. Plants For A Future lists it across much of Europe. That source also lists western Asia and northwestern Africa.

Sources differ on its life span and size. Kew calls it an annual or biennial. This means it may live for one or two growing seasons. Plants For A Future calls it a perennial, which lives for several years. That source gives a height of 3.3 feet [1 metre]. The evidence does not give a usual garden height or spread. The RHS describes leaves and flowers for the genus alone. Those traits may not apply to this species. They do not tell us its leaf shape or flower form.

Plants For A Future gives June to September as its bloom time. The flowers have both male and female organs. Insects pollinate them. The plant is self-fertile, so it can use its own pollen. The supplied species account does not describe fruit or seeds. It lists the plant on farmed land and disturbed ground. It also grows in open, dry grassland. These records place it in open sites, not woodland shade.

Plants For A Future says it needs light and cannot grow in shade. It can grow in sand, loam and clay soils. The source lists mildly acid, neutral and mildly alkaline soils. The plant accepts dry or moist ground. The same source gives USDA zones 6–9. But it casts doubt on the plant's hardiness in Britain. Its growing notes draw on the needs of the whole genus. Thus, its garden guidance is less certain than its habitat records.

Plants For A Future lists no known edible uses. It lists no known hazards, but this does not prove safety. Reported uses in medicine include pain relief and wound care. They also include astringent treatments, which help tighten tissue. These uses do not prove that the plant helps or is safe. The source gives no other uses. It lists cultivated beds as a garden setting. The evidence gives no pest or disease details for this species. It shows no clear role for garden display beyond its summer flowers.