Veronicastrum axillare

Veronicastrum axillare belongs to the plantain family, Plantaginaceae. It is a perennial: it lives for more than two years. Its native range spans southeastern China, parts of Japan, and Taiwan. Kew lists it as a plant of temperate regions. It is not native to Britain or Ireland. Records from China cover several eastern and southeastern provinces. Records from Japan include Honshu, Kyushu, and Shikoku. These sites span several parts of temperate East Asia.

The plant grows about 6 feet [1.8 metres] tall. Kew calls it a perennial or a rhizomatous geophyte. This means it may live on through a rhizome, an underground stem. The supplied species accounts give no spread at full growth. They give no leaf, stem, or fruit details for this species. The RHS gives such details for the genus alone. Those facts do not show this species' exact form.

Plants For A Future lists blooms from July to August. Each flower has both male and female organs. Insects carry pollen to the flowers. The plant is self-fertile: it can use its own pollen. In the wild, it grows on hillsides and gully edges. It grows in forests and in grassland next to forests. Records also place it in shade in low-lying valleys. These sites include both woods and more open ground.

The species account says it prefers moist soil. It accepts sand, loam, and clay that drain well. The listed pH range is mildly acid to mildly alkaline. The same source gives mixed advice on light needs. Its main text says the plant cannot grow in shade. Yet its garden notes list woodland edges and dappled shade. Plants For A Future says its British hardiness is still unclear. Its wider growing notes draw on the genus, not species trials. Those notes give no firm basis for a hardiness zone.

The source lists woodland gardens as one possible setting. Height and summer bloom are its main supported garden traits. The evidence names no pests or diseases for this species. Plants For A Future lists no known uses as food. It reports no known hazards, but that does not prove safety. It also records use of the whole plant as medicine. Some forms are taken by mouth; crushed plant parts go on the body. Reported uses cover inflammation, boils, mumps, joint pain, and injuries. These records do not show that such care is safe or works.