Hollyhock
Alcea rosea
The towering cottage-garden classic — rigid flower spires rise 5-8 feet, clothed top to bottom in showy funnel-shaped blooms of white, pink, and red from June to August. A short-lived perennial usually grown as a biennial or self-seeding "annual," it reads as architecture against a wall or fence and draws hummingbirds and butterflies. Of garden origin, not native to North America, and notoriously prone to rust, which is its defining maintenance demand.
Climate fit: broad (73/100)
Structure
Focal point
Pollinator
Light
Full sun
Water
Moderate water
Mature size
60-96" tall · 18" apart
Hardy in zones
2a-10b
brutally cold to mild winters
AHS heat range
1-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
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A documented larval host for the Painted lady — caterpillars feed on its foliage before becoming the next generation.
Cold hardiness
These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Well-suited
Zone 7a
Plotwright
0°F to 5°F
Well-suited
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
✓
Well-suited today and still thriving in 2050.
Heat tolerance
Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...
Where this plant fits
Suitable across 45 ecoregions — 45 climate-resilient through 2070. Best matches first.
Appalachian mixed mesophytic forests
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Appalachian-Blue Ridge forests
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Arizona Mountains forests
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Atlantic coastal pine barrens
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Blue Mountains forests
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California coastal sage and chaparral
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Canadian Aspen forests and parklands
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Central Pacific Northwest coastal forests
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Central Tallgrass prairie
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Central-Southern Cascades Forests
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Similar plants
Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
Clematis (hybrid)
Clematis
The classic large-flowered garden clematis — represented here by the iconic Jackman hybrid (Clematis x jackmanii), a deciduous twining vine bred in England in 1858 and still the benchmark for the group. It carries an abundance of showy, four-sepaled violet-purple flowers 5-7 inches across from mid summer, climbing 7-10 feet on a trellis, arbor, or fence. The classic gardener rule applies: roots in cool shade, flowers in the sun.
Eutrochium purpureum
Sweet Joe-Pye weed
A tall native perennial wildflower of moist meadows and woodland edges across eastern North America, producing large domed clusters of vanilla-scented pink-purple flowers in late summer — among the most reliable late-season nectar sources for monarchs, swallowtails, skippers, and native bees. Formerly classified as Eupatorium purpureum.
Baptisia australis
Blue false indigo
A long-lived native perennial of central and eastern US woodland borders and prairie meadows with deep blue pea-shaped flowers in late spring, blue-green leguminous foliage, attractive black seed pods for winter interest, and a nitrogen-fixing root system (Fabaceae). Larval host for 6 documented butterfly species per NC State (orange sulphur, clouded sulphur, frosted elfin, eastern tailed-blue, hoary edge, wild indigo duskywing) — among the highest Lep-host-count perennials in the eastern flora.
Hibiscus moscheutos
Hardy hibiscus
A bold, moisture-loving native perennial of eastern North America that dies back to a woody base each winter and returns to throw up stout 2-6 ft stems topped with enormous 4-8 inch saucer-shaped flowers — white, pink, red, or burgundy, each with a contrasting central eye — from June into September. NC State Extension describes a herbaceous perennial hardy across USDA zones 4a-9b that thrives in wet to constantly moist soils, tolerates heat, humidity, and even brief flooding, and draws hummingbirds, butterflies, and other pollinators. The tropical-looking dinner-plate blooms make it a dramatic focal point for rain gardens, pond edges, and the back of a sunny border.
Sambucus canadensis
American elderberry
A fast, suckering native shrub of streambanks and moist thickets across eastern North America, grown for huge flat-topped cymes of tiny lemon-scented white flowers in early summer and the clusters of dark elderberry drupes that follow. Spreads by root suckers into naturalized colonies 5-12 feet tall and wide; the flowers feed butterflies and the showy fruit feeds birds. The raw berries are not eaten fresh — they are cooked into jelly, pie, and wine.
Rosa (hybrid)
Garden rose
The familiar hybrid garden rose — a deciduous, thorny shrub grown for its showy, often fragrant blooms that repeat from late spring to frost. Modern hybrids (hybrid teas, floribundas, grandifloras, and shrub roses) descend from centuries of crossing across the genus and span roughly 1-8 feet tall depending on the class. Rewarding but high-maintenance: full sun, good air circulation, and a regular disease-management routine are the price of the long bloom season.
Sources & citations
Cite this page
For lesson plans, articles, or research that uses this page. To cite a single upstream fact instead, use its specific source listed below.
Plotwright. (2026, May 17). Hollyhock (Alcea rosea). Retrieved 2026, June 24, from https://plotwright.com/plants/alcea-rosea
Sources for every fact
Every fact on this page traces to a source. 18 fields cited - 18 source-backed.
Missouri Botanical Garden PlantFinder
Botanical research database
Backs 17 fields
Identity
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