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BUTTERFLY-BUSH Buddleja davidii (Buddlejaceae) Height to 4m. Robust shrubby perennial with long, arching branches. Grows on waste and disturbed ground. FLOWERS are 3-4mm across, 4-lobed and pinkish purple; borne in long spikes that are extremely attractive to butterflies (Jun-Sep). FRUITS are capsules with winged seeds. LEAVES are long, narrow and darker above than below. STATUS-Popular as a garden plant but also widely naturalised, often on coasts or railway embankments.