Impatiens 'Sunpatiens Compact Lilac' is a dense, mound-forming, well-branched perennial, usually grown as an annual, boasting masses of large, lavender-lilac flowers, up to 2 in. across (5 cm), from late spring to the first frosts. Blooming freely all season, the blossoms contrast nicely against the foliage of long, dark green leaves.