Alcea Rosea
Hollyhock
A hardy perennial with funnel-shaped flowers carried on tall spikes keep these cottage-garden favourites popular in our gardens. Hollyhocks are best treated as biennials since they are prone to fungal disease if allowed to grow for more than two years. Grow hollyhocks in well drained soil but do add some organic matter when planting for best results.
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Full sun
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Occasional watering
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Full Frost Hardy: 5F (-15°C)
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Free draining and fertile
Common name
Hollyhock
Latin name
Alcea Rosea
type
Perennial
family
Malvaceae
ph
5.0 - 8.5 Acid - Neutral
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Light
Full sun
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Frost
Full Frost Hardy: 5F (-15°C)
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Soil
Free draining and fertile
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Water
Occasional watering
Plant & bloom calendar
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Best time to plant
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When the plant will bloom
full grown dimensions
0.50 M
2.50 M
Alcea Rosea
A hardy perennial with funnel-shaped flowers carried on tall spikes keep these cottage-garden favourites popular in our gardens. Hollyhocks are best treated as biennials since they are prone to fungal disease if allowed to grow for more than two years. Grow hollyhocks in well drained soil but do add some organic matter when planting for best results.
Flowering Season
From Mid Summer TO Late Summer
Hollyhocks flower in Summer
Planting Outdoors
From Early Spring TO Mid Spring
Container grown plants are put into a sunny, reasonably fertile well drained position in spring
Propagation by seed
From Mid Spring TO Late Spring
Sow seed in spring into flowering position.
Propagation by seed
From Early Spring TO Mid Spring
Sow seed under glass in early spring, with gentle heat.
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