High Mallow is a European native that has charmed gardeners across continents for centuries, naturalizing so thoroughly in North America that it now feels at home here. Malva sylvestris grows 24 to 48 inches tall with showy flowers that bloom from June through October, attracting butterflies and other pollinators to the garden with reliable, season-long color. Its rounded, kidney-shaped leaves carry a distinctive rough texture, and the plant thrives in full sun to partial shade across hardiness zones 5 through 7. This short-lived perennial can be grown as an annual or biennial, making it flexible for different garden plans, and it seeds itself readily once established, returning year after year with minimal fuss.
Partial Sun
Moderate
5-7
48in H x 36in W
—
Moderate
Hover over chart points for details
High Mallow produces showy flowers throughout summer and early fall, attracting butterflies to any sunny or partially shaded garden. Its leaves are distinctive and striking: rounded to kidney-shaped with a rough, hairy texture that adds tactile interest even between blooms. The plant grows tall and sturdy, reaching 2 to 4 feet, and self-seeds so prolifically that once you grow it, it often becomes a permanent fixture. It needs only moderate moisture and moderate maintenance, handling the transition between seasons with the resilience of a true generalist.
High Mallow serves primarily as an ornamental flower in garden settings, valued for its extended bloom season and pollinator appeal. Gardeners use it to fill mixed borders, add vertical interest to beds, and create naturalistic plantings that support butterfly populations throughout summer and fall.
No timeline data available yet for this variety.
High Mallow grows easily from seed and will self-seed prolifically in the garden under most conditions. Sow seeds directly into the garden in spring after the last frost, or in fall for overwinter germination. The plant can be grown as an annual, biennial, or short-lived perennial depending on your timing and climate zone.
Deadhead spent flowers throughout the blooming season to encourage continued flower production and extend bloom time. If you wish to prevent self-seeding, remove flowers before they set seed. For rejuvenating older plants or controlling height, you can cut stems back in spring, though the plant's natural growth habit rarely requires extensive pruning.
Enter your ZIP code to see a personalized growing calendar for this plant.
“High Mallow originated in Europe, western Asia, and northern Africa, where it has been cultivated for centuries. Over time, the species escaped from gardens and naturalized across much of the world, including Canada and the United States, where it now grows wild in many regions. This ease of naturalization speaks to its adaptability and the esteem in which gardeners held it historically; a plant that proves itself so thoroughly in diverse climates earns the right to spread beyond its origins. Its journey from European gardens to wild populations across North America reflects both deliberate cultivation and the plant's own determination to thrive wherever conditions allow.”