These plants are valued for their showy clusters of tubular flowers; their growth habit is loose, often straggling. One type has fragrant blossoms, but it is also the most tender and looks poorest after flowers are gone. The unscented, red-flowered species are hardier and easier to grow. All appreciate well-drained soil and midday shade; very heat tolerant. To encourage compact growth, prune lightly after bloom.
B. longiflora. SWEET BOUVARDIA. From Mexico. Jasmine-scented, 3-in., snow-white flowers appear at almost any time; excellent in bouquets. Plant is 23 ft. high and 2 ft. wide, with paired, 2-in. leaves. Pinch out stem tips to make bushier. If soil is poor, grow in pots or raised beds in rich, fast-draining soil mix. Provide regular water. 'Albatross' is the form most widely sold; it has larger flowers than the species. 'Stephanie' is more compact and floriferous.
B. ternifolia (B. jacquinii). SCARLET BOUVARDIA. Native to Texas, Mexico. To 3 ft. tall, 2123 ft. wide, with 2-in. leaves in whorls of three or four. Produces unscented, inch-long, red flowers in loose clusters at branch ends in summer and early autumn. Forms are available with pink, rose, or coral blossoms. Prefers neutral to acid soil. Little water.