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CALLUNA


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bottlebrush, and most tolerant of heat, cold, and poor soils. Naturally a shrub 10–15 ft. tall and wide, it is easily staked or pruned into a narrow, round- headed, 20–25-ft. tree. Nurser- ies sell it as shrub, espalier, or tree. Narrow leaves are coppery when new, maturing to vivid green. Bruised leaves smell lemony. Bright red, 6-in.-long brushes appear in waves throughout the year. Variable plant when grown from seed. Among cutting-grown selections with good fl ower size and color: ‘Violaceus’ (‘Jeffersii’), about 6 ft. tall and 4 ft. wide, has stiffer branching; narrower, shorter leaves; and reddish pur- ple fl owers fading to lavender. ‘Mauve Mist’ is the same but can reach 10 ft. ‘Perth Pink’, 10 ft. tall, has pink fl ower clusters. C. rigidus. STIFF BOTTLE- BRUSH. Zones 8, 9, 12–24; H1, H2. Rigid, sparse shrub or small tree to 20 ft. with 10-ft. spread. Leaves sharp pointed, gray-green (sometimes pur- plish). Spring and summer red fl ower brushes are 21⁄2–41⁄2 in. long. Produces prominent seed capsules. Least graceful of the bottlebrushes. C. salignus. WHITE BOTTLE- BRUSH. Zones 8, 9, 12–24. Shrub or tree to 20–25 ft. tall, 10–15 ft. wide. Dense crown of foliage. New growth bright pink to copper. Willowlike leaves 2– 3 in. long. Pale yellow to cream- colored fl owers appear in 11⁄2– 3-in. clusters in spring, early summer. Train as small shade tree or plant 4–5 ft. apart as hedge. C. sieberi. ALPINE BOTTLE- BRUSH. Zones 5–9, 14–24. Shrub to 3–6 ft. tall and wide, with somewhat upright habit. Small, dark green leaves densely cover the pendulous branches. Cream to yellow fl owers in 11⁄2– 6-in.-long brushes appear from late spring to midsummer. Good choice for colder areas. C. viminalis. WEEPING BOT-


TLEBRUSH. Zones 6–9, 12–24. Shrub or small tree with pendu- lous branches. Fast growing to 20–30 ft. tall, 15 ft. wide. Leaves narrow, light green. Bright red brushes appear late spring into summer, then spo- radically. Not suitable for windy, dry areas. As a tree, needs staking; thin to prevent tangled,


top-heavy growth. Leaves tend to concentrate at branch ends. ‘Little John’ is a superior


dwarf form to 3 ft. tall and wide, with dense growth pattern and blood red fl owers in fall, winter, and spring. ‘Captain Cook’ is dense and rounded, to 6 ft. tall and wide, suitable for border, low hedge, or screen. ‘Red Cas- cade’ grows to a similar height with large, abundant, rosy red blooms. ‘McCaskillii’ is denser, with better fl ower color and form; to 20 ft. tall. C. viridifl orus. GREEN BOT- TLEBRUSH. Zones 4–9, 14–24. Upright and open shrub to 6– 8 ft. tall and wide. Golden, fl ak- ing bark. Dark green leaves are short and densely held along stems. Green to creamy yellow 3-in. brushes appear from spring to summer.


Callistephus


chinensis CHINA ASTER


Asteraceae ANNUAL


ZZONES 1–24 FFULL SUN O REGULAR WATER


b ATTRACTS BUTTERFLIES


be quilled, curled, incurved, ribbonlike, or interlaced; some blooms have crested centers. Colors range from white to pastel pink, rose-pink, lavender, lavender-blue, violet, purple, crimson, wine, and scarlet.


CARE


Plant in rich, loamy or sandy soil. After danger of frost, sow seeds in place or set out plants started in fl ats. Keep growth steady; sudden checks in growth are harmful. Subject to aster yellows, a viral disease carried by leafhoppers. Discard infected plants; control leafhoppers. All but wilt-resistant types are subject to aster wilt or stem rot, caused by a soil-borne fun- gus. Overwatering encourages disease, especially in heavy or poorly drained soil. Never plant in the same location in successive years.


Calluna vulgaris SCOTCH HEATHER


Ericaceae EVERGREEN SHRUB


ZZONES 1A, 2–6, 15–17 FFULL SUN O REGULAR WATER


colored sepals) come in white, shades of pink, lavender, and purple. Most kinds fl ower in mid- to late summer, but a few bloom into late fall. All are good for cutting. Bud-blooming heath- ers produce fl owers that don’t open; the buds supply the color, which lasts much longer than buds that open. On all heathers, crowded, tiny, scalelike leaves come in paler and deeper greens, chartreuse, yellow, gray, or russet. As colors change or intensify in winter, they can deliver as much visual impact (especially when they contrast with each other) as the fl owers they produce in summer. Nurseries commonly carry


several varieties of heather, while specialists stock scores of them. All begin blooming in summer, except as noted. ‘Alicia’. Bud bloomer. Grows 12 in. high, 18 in. wide, with masses of white blooms from late summer through autumn. ‘Anette’. Bud bloomer. Erect, to 1 ft. high, 16 in. wide. Medium green foliage; clear pink buds last well into fall. ‘Aphrodite’. Bud bloomer. Grows 15 in. high, 24 in. wide, with red blooms in summer. ‘Firefl y’. Upright, to 11⁄2 ft.


high, 20 in. wide. Foliage is salmon-red in summer, turning bright red in winter. Deep mauve fl owers. ‘Kinlochruel’. Compact, to 10 in. high, 16 in. wide. Bright green foliage; spectacular white double fl owers. ‘Mrs. Ronald Grey’. Ground-


cover grows about 3 in. high, 18–21 in. wide. Purple fl owers appear in mid- to late summer. ‘Robert Chapman’. Spread-


Callistephus chinensis


This summer-fl owering Chinese native makes a splendid cut fl ower and an effective bedding plant when well grown and dis- ease free. Grows 8–36 in. high, 10–18 in. wide. Some types are branching; strong-stemmed types developed for fl orists have no side shoots. Leaves are deeply toothed or lobed. Flower forms are classifi ed


as peony, pompon, anemone, and ostrich feather. Rays can


Calluna vulgaris


Scotch heather carpets the moors of Britain with fi nely tex- tured foliage and pink summer fl owers, and dots Europe clear to Asia Minor. It often keeps company with similar heaths (Erica) in the wild, as it does in Western gardens. Horticultural varieties range


from dwarf groundcovers only a couple of inches high to kinds reaching 3 ft. tall. Masses of tiny, urn-shaped fl owers (actually


ing, to 10 in. high, 2 ft. wide. Greenish to reddish orange foli- age; mauve fl owers. ‘Sandy’. Bud bloomer. Grows 15 in. high, 2 ft. wide, with white blooms in late summer through autumn. ‘Silver Knight’. Upright, to 16 in. high, 20 in. wide. Downy gray foliage turns purple-gray in winter. Lavender fl owers. ‘Spring Torch’. Spreading, to 1 ft. high, 20 in. wide. Red- tipped green foliage and pink fl owers. ‘Tib’. Rounded, bushy, to 1 ft.


high, 15 in. wide. Medium green foliage; deepest rosy purple double fl owers.


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