Hollyhock (Alcea rosea)

Hollyhock
Scientific Name: Alcea rosea L.
Synonym: Althea rosea
Family: Malvaceae
Recommended Temperature Zone:
sunset: All zones
USDA: 4-10

Frost Tolerance: Hardy in Phoenix
Sun Exposure: Full sun
Origin: Eastern Mediterranean
Growth Habits: Annual in Phoenix, tall spikes of flower reaching 9 feet (2.7 m) for some varieties
Watering Needs: Regular water
Propagation: Seeds in late summer or spring

Growing 4 to 8 feet high, hollyhocks are an old garden standard, particularly useful for background screening or where vertical accent is desired. They grow best in full sun in deep, rich, well drained soils. Some varieties act as reseeding biennials. Annual types are available that flower the first year. Many colors are available from pastels to near black.
Linnaeus, who named this plant, used both Alcea (Latin form) and Althea(Greek form) from the Greek word for 'to cure'

Cultural Practices:
Avoid soils that are too rich. Check for rust and spider mites.

Propagation:
Sow in September for spring bloom. Protect the seedlings from snails and slugs. They can also be sown indoor at 50-55°F (10-12°C)

References:
Botanica : The Illustrated A-Z of over 10,000 Garden Plants

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