
Life Cycle
Annual
Plant Characteristics
Large showy blooms tall spikes
Growth Habit
Upright
Bloom Season
Spring to autumn
Flavour Profile
Not applicable
Suitable for
Outdoor
Seed Type
Open pollinated
Plant Type
Ornamental flowering plant
Planting Season
Spring
Fruit Size
Not applicable
Plant Height
150 to 200 cm
Light Requirement
Full Sun
Water Needs
moderate
Hardiness Zones
Cool to temperate climates
Container Garden
Yes
Plant Spacing
20 to 30 cm
Planting Depth
Light cover
Growing Conditions
Cool sunny locations
Frequently Asked Questions
How can hollyhocks be used behind shorter garden plants?
How can hollyhocks be used behind shorter garden plants?
Their tall growth makes them useful toward the back of borders or against walls and fences, where they can create a vertical layer behind shorter flowers.
Do hollyhocks need support in exposed gardens?
Do hollyhocks need support in exposed gardens?
They may benefit from support in windy locations because their tall stems can be affected by strong winds.
Can hollyhocks be allowed to self-seed?
Can hollyhocks be allowed to self-seed?
Yes. The page suggests allowing some plants to self-seed for future seasons. Remove unwanted seedlings if you want to control where plants appear.
What companion plants work well with tall hollyhocks?
What companion plants work well with tall hollyhocks?
Pair them with lower-growing border plants that tolerate similar sunlight and soil conditions. This creates layered planting without hiding the tall flower stems.
How can I reduce overcrowding among young hollyhocks?
How can I reduce overcrowding among young hollyhocks?
Thin seedlings after establishment and leave enough space for mature plants. Good spacing supports stronger growth and improves airflow around foliage.
Can hollyhocks add height to a small garden border?
Can hollyhocks add height to a small garden border?
Yes. Even in smaller spaces, placing them toward the back of a border can add vertical interest while keeping shorter plants visible in front.