Mallow 'Fastigiata' is a clump-forming perennial that brings summer elegance to the garden with pink, hollyhock-like flowers held on upright stems. This botanical variety, hardy in zones 4 through 7, grows 2 to 3 feet tall (occasionally reaching 4 feet) and spreads 12 to 18 inches wide, producing showy blooms from June through September. The five-petaled flowers, each about 2 inches across with distinctly notched edges, emerge from the upper leaf axils above deeply lobed, light green foliage. Unlike the sprawling species, 'Fastigiata' maintains a more narrow, upright habit that fits neatly into mixed borders and naturalized plantings.
Partial Sun
Moderate
4-7
48in H x 18in W
—
High
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The 'Fastigiata' cultivar stands out as the most popular form of Malva alcea, prized for its tidy, upright growth and prolific blooming throughout summer. Pink flowers with their signature notched petals open continuously from June into fall, drawing butterflies and other pollinators throughout the season. Tolerating drought once established and thriving in full sun to partial shade, this perennial asks little beyond well-drained soil and moderate water, making it a low-maintenance addition to any garden scheme.
Mallow 'Fastigiata' shines in naturalized plantings where its self-seeding tendency can create drifts of summer color in meadows and informal borders. The showy pink flowers and butterfly-attracting qualities make it valuable in pollinator gardens, where its blooming span from June through September provides extended nectar sources. Its upright habit and moderate size suit cottage gardens and mixed perennial borders, where it bridges the gap between shorter front-of-border plants and taller background specimens.
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Cut back spent flower spikes throughout the blooming season to encourage additional flowering and maintain plant vigor. In fall, cut stems back to basal foliage as part of your seasonal cleanup, or wait until spring if you prefer a more gradual approach. Stems may be cut back in spring if you desire shorter, more compact plants. This cultivar's tidy, upright growth habit means pruning is more about deadheading and seasonal cutback than major shaping.
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“The genus name Malva carries ancient Latin roots, reflecting this plant's long cultivation in European gardens. The 'Fastigiata' cultivar emerged as the most commercially favored selection of Malva alcea, chosen and propagated because its compact, columnar growth habit improved upon the more sprawling species. This deliberate selection process demonstrates how gardeners have long refined plants to better suit garden spaces, transforming a naturally loose-growing species into a cultivar with disciplined vertical form.”