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GARLIC MUSTARD Alliaria petiolata (Brassicaceae) Height to 1m. Familiar wayside biennial, often found in hedgerows and on roadside verges. FLOWERS are 6mm across with 4 white petals (Apr-Jun). FRUITS are cylindrical, ribbed and 4-5cm long. LEAVES are heart-shaped, toothed and borne up stem; they smell of garlic when crushed. STATUS-Widespread and common, but least so in N and W or region.