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336


GERANIUM


Geranium CRANESBILL


Geraniaceae PERENNIALS


ZZONES VARY BY SPECIES


FP AFTERNOON SHADE IN HOTTEST CLIMATES


O REGULAR WATER, EXCEPT AS NOTED


be left in place for many years before they decline due to crowding; at that point, divide in early spring. Increase by trans- planting rooted portions from a clump’s edge; or take cuttings. Many produce lots of seedlings, and some can become natural- ized pests. G. ‘Ann Folkard’. Zones 2b–


G


9, 14–24. Mounding, billowing plant (11⁄2 ft. high, to 5 ft. wide) with chartreuse leaves that age to light green. Saucer-shaped, 11⁄2-in.-wide blossoms are rich magenta-purple suffused with pink and blue, centered and veined in black. Blooms from spring into fall. Effective planted at edge of patio and sprawling onto it. G. ‘Brookside’. Zones


Geranium ‘Rozanne’


The bright-fl owered, fl eshy- leafed plant often called gera- nium actually belongs to the genus Pelargonium. Considered here are true geraniums, some- times called hardy geraniums, as most can take considerable cold. Many bloom over a long period, with fl owers held singly or in few-fl owered clusters. Colors include blue, purple, magenta, bluish rose, and pink, as well as white. Beaklike fruit that follows the fl owers accounts for the common name “cranesbill.” The leaves are roundish or kidney-shaped, lobed or deeply cut; plants may be upright and mounding or trailing and scrambling. Good along paths, in perennial bor- ders, or in rock gardens; some are useful as groundcovers. A few shrubby species are good for holding slopes.


Best climates for most geraniums are cool- and mild- summer regions, where plants can grow in full sun or light shade. In hot-summer areas, provide afternoon shade. South African species are less cold- hardy but are more tolerant of heat and afternoon sun. All types appreciate moist, well- drained soil. Some geraniums benefi t from being cut back after fl owering or in the fall; these are noted in text. Clumps of most types can


2b–9, 14–24. Hybrid between G. pratense and a purple form of G. clarkei. To 21⁄2 ft. high and as wide, with deeply serrated, 3-in.-wide leaves. Plant is cov- ered from late spring into sum- mer with bowl-shaped fl owers to 2 in. across. Long-lasting blooms are rich, deep blue with pale centers and pink veins. Its seedling ‘Orion’ is similar, but with larger fl owers (21⁄2 in. across) of an even richer blue. Both can be cut back after fl ow- ering for repeat bloom. G. × cantabrigiense. Zones 1–24. Excellent ground- cover, 6–8 in. high, spreading slowly but widely. Pleasantly scented, dark green leaves up to 2 1⁄2 in. wide are deeply cut with multiple lobes. Long-lasting fl owers are about 1 in. across. Plants may be sheared in late fall for fresh spring growth. Moderate to regular water. Pop- ular ‘Biokovo’ has white blooms with a pink blush. ‘St. Ola’ is similar but more vigorous, with creamy white blooms that age to light rusty pink. Blossoms of ‘Cambridge’ and ‘Karmina’ are bright bluish pink, and those of ‘Westray’ are dark pinkish red. All bloom from early spring well into summer. G. cinereum. Zones 1–24,


but very short-lived where sum- mers are hot. From the Pyre- nees. Forms wide, 8–12-in.-high mats composed of soft gray- green, deeply cut leaves. In early to midsummer, slender, trailing stems bear many cupped fl owers to 11⁄2 in. wide; blooms are pale pink with dark veins.


‘Ballerina’ is pinkish lilac with dark veins and a wine-colored center; continues blooming into fall. The slightly larger ‘Laurence Flatman’ has light lavender blossoms with reddish center blotches between red veins. ‘Purple Pillow’ has bright purple fl owers with dark purple veins. G. dalmaticum. Zones


ver Sugar Plum’). Zones 14–24. Hybrid between G. inca- num and G. robustum. Billowy, scrambling plant 11⁄2 ft. high by 5 ft. or wider. Finely cut leaves are gray-green above, silvery beneath. Saucer-shaped lilac- mauve fl owers to 1 in. across, early spring through fall. Takes hot afternoon sun. Seeds pro- fusely and can be invasive; seedlings vary widely. G. harveyi. Zones 5–9, 14–24. From South Africa. Woody-based mound to 8 in. high by 2 ft. or wider. Small, deeply lobed, silky leaves are gray-green above, silvery under- neath. Magenta, 11⁄4-in.-wide fl owers from late spring through fall. Tolerates hot sun. Good on slopes or trailing among rocks. G. himalayense (G. gran-


difl orum). Zones 1–24. Hima- layan native to 11⁄2 ft. high, spreading by rhizomes to about 2 ft. wide. Leaves are roundish, with prominent veins and fi ve broad, deeply divided lobes. Blooms from late spring into summer; foot-tall stems bear clusters of large (to 21⁄2 in. wide) blue fl owers with reddish veins and purple eye. Excellent


1–24. From the Balkans. Low (4–5 in.) carpeting plant, creep- ing slowly by rhizomes to 2 ft. or wider. Glossy, deeply cut dark green leaves contrast beauti- fully with the soft pink, 1-in. fl owers that appear in late spring. Leaves turn orange to red in fall. Good among pavers or spilling over a rock wall. G. endressii. Zones 1–9, 14–24. From southern Europe to southwest Asia. Bushy, mounding plant to 11⁄2 ft. high, spreading by rhizomes to 2 ft. or wider. Light green leaves are fi nely cut. Blossoms are rose- pink with a silvery sheen, about 1 in. across. Blooms late spring into fall in mild-summer areas; peters out in early summer where summers are hot. Ever- green in mild climates. G. ‘Frances Grate’ (‘Sil-


deciduous small-scale bulb cover; plant 1–11⁄2 ft. apart. ‘Gravetye’ is a dependable selection typical of the species. ‘Baby Blue’ has larger light blue fl owers. ‘Plenum’ (‘Birch Double’) is less vigorous, with double light lavender blossoms. G. incanum. Zones 14–24.


From South Africa. To 6–10 in. high, spreading fast to form a 2-ft.-wide cushion of fi nely cut leaves. Inch-wide light magenta fl owers appear from spring to fall. Cut to ground every other year to keep neat. Endures heat and drought better than most geraniums, but needs some summer water. Self-seeds pro- fusely and can be invasive. G. ‘Johnson’s Blue’. Zones A2, A3; 2–9, 14–24. Hybrid resembling its G. himala- yense parent, but leaf divisions are narrower. Mounds 11⁄2–2 ft. wide and spreads by rhizomes; excellent summer groundcover. Abundant 2-in., blue-violet fl owers in loose clusters from spring to fall. G. macrorrhizum. Zones


1–24. From southern Europe. To 8–10 in. high, spreading fast by underground rootstocks and fl eshy rhizomes that root on soil surface. Leaves have a strong, musky fragrance and attractive autumn coloring ranging from dull yellow to orange and scar- let. Inch-wide fl owers in white, pink, or magenta appear late spring through early summer, with some repeat in fall. Good groundcover for small areas, though it can overwhelm smaller plants. Grows well in fairly dry shade. ‘Album’ is white with a blush of pale pink. ‘Bevan’s Variety’ has vibrant combination of deep magenta petals and red sepals. ‘Ingwers- en’s Variety’ has soft bluish pink fl owers, long blooming season. G. maculatum. WILD CRANESBILL, SPOTTED CRANES BILL. Zones 1–24. Native to moist woodlands and meadows of eastern North America; the only commonly cul- tivated U.S. native cranesbill. To 11⁄2 ft. high, 2 ft. wide, with deeply divided leaves. Profuse lilac-pink, 1–11⁄2-in. fl owers in spring to early summer. ‘Album’ has white blossoms. Leaves of ‘Elizabeth Ann’ and ‘Espresso’ are dark chocolate brown. All


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