Hollyhock
Alcea rosea
flowerHollyhocks are iconic tall biennials with large, showy flowers that bloom in a wide range of colors along sturdy vertical stems. They create dramatic height and structure in gardens, thriving in full sun and tolerating poor soil conditions. These heirloom flowers self-seed prolifically and are beloved for cottage gardens and romantic plantings.
Common Problems
Select the problem your Hollyhock is experiencing to get a treatment guide.
Care Guide
Toxicity
Non-toxic to cats, dogs, and children
Common Diseases
Common Pests
Seasonal Care
Resume regular watering and feeding as growth picks up.
Peak growing season. Water and feed regularly.
Reduce watering as growth slows. Stop heavy feeding.
Minimal watering and feeding. Protect from frost if needed.
Similar Plants
Frequently Asked Questions
Why do my Hollyhocks only flower in their second year?
They're biennials — the plant builds foliage in its first year and requires winter chill before producing its tall, showy flower spikes in the second year.
Why does my Hollyhock have rusty spots on its leaves?
Rust is a common disease on Hollyhocks, encouraged by low air circulation and moist foliage — space plants well and water at the base to reduce the risk.