Plant Characteristics
Botanical Name: Alcea rosea
Common Name: Hollyhock
Native: Non-native
Native Region: Not native to North America; origin Southwest Asia; long in garden cultivation
Sun: Full Sun
Water: Moderate
Bloom Time: Summer
Bloom Color: Variety
Pollinators: Bees; Butterflies; Hummingbirds
Host Plant: Painted lady, Common checkered-skipper
Mature Size: W 1'-2' x H 5'-8'
Soil: Rich, well-drained; needs steady moisture and shelter from wind
Pollinator Value: Deep flowers favored by bumble bees; larval host for painted lady and common checkered-skipper
Plant Type: Short-lived perennial or biennial
USDA Zones: 3 to 8
Spread Habit: Self-sows
Available As: Live plant
Growing Notes
Full sun and shelter from wind, which is the limiting factor here more than soil or cold: an unstaked hollyhock in an exposed Northern Nevada yard will snap. Plant it against a fence or a wall. Give it steady water. Space about 18 inches apart.
Water: Moderate
Sun: Full Sun
Soil: Rich, well-drained; needs steady moisture and shelter from wind
Mature size: W 1'-2' x H 5'-8'
Maintenance
Let some seed drop if you want it to persist, since individual plants are short-lived and often die after flowering. Cut the stalks down once the seed has shed. Hollyhock rust shows up as orange spots on the leaf undersides; pull affected leaves as they appear, clear all the debris in fall, and water at the base rather than overhead. Rust is disfiguring rather than fatal, but it spreads on wet foliage.