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Hibiscus 'Oak Red' (Swamp mallow 'Oak Red')
3 hours care
per year
per year
0.6m
Max height
Max height
0.8m
Max spread
Max spread
10-20 years
To maturity
To maturity
Plant details
Botanical name
Hibiscus 'Oak Red'
Other names
Swamp mallow 'Oak Red', Hibiscus moscheutos 'Oak Red'
Genus
Hibiscus Hibiscus
Variety or Cultivar
'Oak Red' _ 'Oak Red' is an upright, deciduous, woody-based perennial with ovate, lobed, glossy, dark green leaves and very large, single, deep crimson flowers from midsummer into autumn.
Hibiscus 'Oak Red' is: Deciduous
Habit
Upright
Flower
Crimson in Summer; Crimson in Autumn
Foliage
Dark-purple in Spring; Dark-purple in Summer; Dark-purple in Autumn
How to care
Watch out for
Specific pests
Aphids , Mealybugs , Thrips Aphids , Mealybugs , Thrips
Powdery mildew Powdery mildew
General care
Pruning
Pinch out tips of young plants to promote a bushier habit. Deadhead regularly to prolong flowering. Pruning group 1 or treat as a perennial and cut back low in autumn after flowering.
Propagation methods
Layering, Seed, Semi-hardwood cuttings
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Where to grow
Hibiscus 'Oak Red' (Swamp mallow 'Oak Red') will reach a height of 0.6m and a spread of 0.8m after 10-20 years.
Suggested uses
City, Coastal, Cottage/Informal, Beds and borders, Hedging/Screens, Containers, Wallside and trellises
Cultivation
Grow in moist or moist but well-drained, neutral to alkaline soil in a sunny site with shelter from strong winds. Best if fed regularly throughout the growing season. Tolerates head & humidity. Tolerates light shade but flowering will be reduced. Do not allow soil to dry out. Apply a thick, dry winter mulch in cold areas.
Soil type
Chalky, Clay, Loamy
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, East
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
Companion plants
We do not currently have companion plants added for this plant.
Botanical name
Hibiscus 'Oak Red'
Other names
Swamp mallow 'Oak Red', Hibiscus moscheutos 'Oak Red'
Genus
Hibiscus Hibiscus
Variety or Cultivar
'Oak Red' _ 'Oak Red' is an upright, deciduous, woody-based perennial with ovate, lobed, glossy, dark green leaves and very large, single, deep crimson flowers from midsummer into autumn.
Native to
Garden origin
Foliage
Deciduous
Habit
Upright
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Colour
Flower
Crimson in Summer; Crimson in Autumn
Foliage
Dark-purple in Spring; Dark-purple in Summer; Dark-purple in Autumn
How to care
Watch out for
Specific pests
Specific diseases
General care
Pruning
Pinch out tips of young plants to promote a bushier habit. Deadhead regularly to prolong flowering. Pruning group 1 or treat as a perennial and cut back low in autumn after flowering.
Propagation methods
Layering, Seed, Semi-hardwood cuttings
Monthly care advice
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Where to grow
Hibiscus 'Oak Red' (Swamp mallow 'Oak Red') will reach a height of 0.6m and a spread of 0.8m after 10-20 years.
Suggested uses
City, Coastal, Cottage/Informal, Beds and borders, Hedging/Screens, Containers, Wallside and trellises
Cultivation
Grow in moist or moist but well-drained, neutral to alkaline soil in a sunny site with shelter from strong winds. Best if fed regularly throughout the growing season. Tolerates head & humidity. Tolerates light shade but flowering will be reduced. Do not allow soil to dry out. Apply a thick, dry winter mulch in cold areas.
Soil type
Chalky, Clay, Loamy
Soil drainage
Moist but well-drained, Moisture-retentive
Soil pH
Acid, Alkaline, Neutral
Light
Full Sun
Aspect
South, East
Exposure
Sheltered
UK hardiness Note: We are working to update our ratings. Thanks for your patience.
Hardy (H4)
USDA zones
Zone 9, Zone 8, Zone 7, Zone 6, Zone 5
In order to add a note on this plant, please add this plant to your plant lists.
| This plant likes... | Garden match | |
| Soil types: | Chalky, Clay, Loamy | Tell us... |
| Soil drainage: | Moist but well-drained, Moisture-retentive | Tell us... |
| Soil pH: | Acid, Alkaline, Neutral | Tell us... |
| Light: | Full Sun | Tell us... |
| Aspect: | South, East | Tell us... |
| Exposure: | Sheltered | Tell us... |
| Hardiness: | Hardy (H4) | Tell us... |
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