An annual of open grasslands, heaths, cliff-tops and sand dunes. It also grows in artificial habitats such as quarries, wall-tops, by railways and on waste ground in built-up areas. It was a frequent introduction from wool shoddy. V. bromoides favours well-drained soils, often growing abundantly on drought-prone S.-facing banks and slopes, but appears to be indifferent to soil pH. 0-490 m (Fanna Hill, Roxburghs.).
There has been little change in the range of V. bromoides since the 1962 Atlas, though it now appears to be more frequent in many areas.
Submediterranean-Subatlantic element; widely naturalised outside its native range.
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