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338


GERANIUM


G. × riversleaianum. Zones 2b–9, 14–24. Forms foot-high, wide-spreading mat of silky, silvery green leaves.


Continuous show of rounded, 3⁄4-in. blossoms on long, trailing stems from late spring through fall. ‘Mavis Simpson’ has soft, shell pink blossoms with dark veins. ‘Russell Prichard’ is bril- liant magenta-rose. G. robustum. Zones 14–24.


G


Shrubby species from South Africa grows 3 ft. high, 4 ft. wide. Finely divided leaves are silky gray-green above, silvery below. Summer fl owers 1 in. across, light purple with a white eye. Survives with little water. Use on slopes with other drought- tolerant plants like lavender (Lavandula) and rockrose (Cis- tus). Self-sows profusely; cut back fairly hard after bloom to freshen plant and keep seed- lings in check. G. ‘Rozanne’. Zones 2–11, 14–24. This naturally occurring hybrid between G. himalayense and G. wallichianum ‘Buxton’s Variety’ is very popular and easy to grow. Plants reach 11⁄2– 2 ft. high and spread a little wider, forming a lush mound of deeply lobed, dark green leaves; foliage takes on attractive red tones in the fall. Stunning fl ow- ers, to 21⁄2 in. wide, are rich violet-blue with a large white eye. Blooms all summer and into autumn, doing especially well in warm, sunny spots. For freshest spring growth, cut back plants in late fall. G. ‘Salome’. Zones 4–6, 14–17. A cross between two Himalayan species. This low, trailing plant grows about 1 ft. high and 3–4 ft. wide. Leaves emerge golden green and age to a fresh light green. Foliage is a lovely foil for the 11⁄4-in. blos- soms of pale violet-pink, cen- tered and veined with deepest violet. Blooms midsummer to late fall; cut back after bloom period to freshen plants. Good choice for cooler parts of Pacifi c Northwest; struggles in heat. G. sanguineum. BLOODY CRANESBILL. Zones A2, A3; 1–9, 14–24. Native from west- ern Europe to the Caucasus and Turkey. Forms dense clump 8–18 in. high, spreading by rhi- zomes to 21⁄2 ft. or wider. Dark green leaves are deeply divided; turn blood red in fall. Typical


forms have deep purple to almost crimson fl owers 11⁄2 in. wide; bloom late spring well into summer and will rebloom if cut to ground. Good 1–11⁄2-ft.-tall selections include white ‘Album’; ‘John Elsley’, pink with deeper pink veins; reddish purple ‘Max Frei’; and ‘New Hampshire’, reddish magenta petals with magenta veins. Vision, a vari- able seed-grown strain, has magenta fl owers with dark pur- ple veins. G. s. striatum is a compact


form only 5–6 in. high. It bears light pink fl owers heavily veined with red (its seedlings may vary somewhat) and makes an excel- lent rock-garden or foreground plant. G. wallichianum. Zones


2–9, 14–24. Himalayan native of low, sprawling or trailing but not rooting habit, 1 ft. high and 3 ft. wide. Blooms from early summer until autumn, bearing 1–11⁄2-in.-wide fl owers in lilac or purplish blue with a white eye. ‘Buxton’s Variety’ has pure blue fl owers with large white eye and striking black stamens. G. wlassovianum. Zones


A2, A3; 1–7. Native to Siberia, Mongolia, and northeastern China. Clump-forming plant to 11⁄2–2 ft. high and wide. Velvety, 2-in., divided leaves emerge pinkish bronze, mature to dusky green tinged with brown, and then turn cinnamon brown in fall. Reddish purple, 11⁄4-in.-wide fl owers with small white eye and deep violet veins. Blooms mid- summer to early fall.


Several geraniums thrive in one of the most challenging garden conditions: dryish shade. Try G. endressii, G. macror- rhizum, G. phaeum, or (especially good for a large area, such as beneath a tree, where little else will grow) G. × oxonianum ‘Claridge Druce’.


Gerbera


jamesonii TRANSVAAL DAISY Asteraceae


PERENNIAL OFTEN GROWN AS ANNUAL


ZZONES 8, 9, 12–24; H1, H2; ANYWHERE AS ANNUAL


FP PARTIAL SHADE IN HOTTEST CLIMATES


O REGULAR WATER


soil become nearly dry before watering again. Fertilize monthly for best fl owering. Divide (in late winter) only when clump is crowded and fl owering declines. When cutting blooms for arrange- ments, slit the bottom inch of stem before placing in water.


Geum AVENS


Rosaceae PERENNIALS


ZZONES 2–24, EXCEPT AS NOTED


FP PARTIAL SHADE IN HOTTEST CLIMATES


O REGULAR WATER b ATTRACT BUTTERFLIES


Gerbera jamesonii ‘Revolution Orange’


This South African native is among the most elegant and sophisticated of daisies. Clump of tongue-shaped, lobed, 10-in.- long leaves sends up slim yet sturdy stems to 11⁄2 ft. high, each bearing one slender- petaled, 4–5-in. daisy. Colors are pure, unshaded, and glow- ing; include cream through yel- low to coral, orange, fl ame, and red. Basic fl ower has single ring of rays surrounding prominent central disk. Hybrid forms may have two rows of long rays, or an outer ring of long rays and a central ring of short, tufted ones; or they may be fully dou- ble, with a fl uffy look. Many strains are sold, including dwarf types only 7 in. high. As peren- nial, can bloom anytime of year, with peaks in early summer and late fall. Beyond hardiness range, treat as summer annual. In Zones 12 and 13, best as winter annual (may last longer during a cool spring).


CARE


Needs organically enriched soil with excellent drainage (if soil drains poorly, grow in raised bed). Plant 2 ft. apart; to avoid rot, keep root crown slightly above soil level. Protect from snails and slugs. Water deeply and let


Geum chiloense ‘Lady Stratheden’


Lovely roselike fl owers in bright orange, yellow, or red keep com- ing from spring to late summer if faded blooms are removed. Foliage is handsome too, with leaves divided into many leaf- lets; evergreen except in cold- est winters. Good in borders and for cut fl owers. Provide good drainage. G. chiloense. Native to


Chile. Foliage mounds to 15 in. high, 2 ft. wide. Leafy stems to 2 ft. high carry fl owers about 11⁄2 in. across. Among the many varieties are double golden yel- low ‘Lady Stratheden’; semidou- ble scarlet ‘Mrs. J. Bradshaw’; and single warm orange ‘Totally T angerine’. Hybrids include ‘Alabama Slammer’, with semi- double, deep orange-red-tipped blooms, and ‘Georgenberg’, with light yellow-orange blooms. G. coccineum. From the


Balkans, Asia Minor. To 12–20 in. high and wide, with coarsely divided foliage and brick red, 11⁄2-in. fl owers. ‘Borisii’ is


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