All are grown for clusters of five-petaled flowers like little hollyhocks (Alcea). Plants described here range from erect to sprawling; leaves are typically dark green, roundish to kidney-shaped, about 3 inches across. Basal leaves are shallowly lobed, stem leaves more deeply cut. Provide good drainage. Divide clumps every few years in spring or fall.
- Native to High Plains.
- To 23 feet high, spreading by rhizomes to 112 feet wide.
- Unbranched stems bear bluish green leaves to 8 inches across.
- Crowded spikes of white, 1 inches flowers in midsummer.
- Most sidalceas grown in gardens are hybrids involving S.candida, Sidalcea malviflora, and Sidalcea oregana (a species native to much of the western U.S.).
- They form clumps to about 2 feet wide and bear 112- to 2 inches flowers; bloom all summer if deadheaded.
- Popular choices include 3 feet 'Elsie Heugh', with fringed pale pink flowers; 212 feet 'Loveliness' (shell-pink); 2- to 3 feet 'Party Girl' (deep pink); 3 feet 'Rosanna' (deep purplish pink); and 3 feet 'William Smith' (salmon-tinted, deep rose-pink).
- Little Princess is compact at just 1115 inches tall and about as wide; its profuse flowers are soft pink.
- Native to Oregon, California, Baja California.
- May grow erect to 2 feet high and wide; or may sprawl and spread more widely by rooting at the nodes.
- Pink or purplish pink, 2 inches flowers in early spring.
- Moderate water.