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Hibiscus laevis (Halberd-leaved rose mallow)
3 hours care
per year
per year
1.8m
Max height
Max height
0.9m
Max spread
Max spread
2-5 years
To maturity
To maturity
Plant details
Botanical name
Hibiscus laevis
Other names
Halberd-leaved rose mallow, Smooth rose mallow, Hibiscus militaris
Genus
Hibiscus Hibiscus
Species
H. laevis - H. laevis is an upright, deciduous perennial with spear-shaped, mid- to dark green leaves divided into three lobes and, from midsummer into autumn, large, white to pink flowers with maroon eyes.
Hibiscus laevis is: Deciduous
Habit
Upright
Flower
White, Pale-pink in Summer; White, Pale-pink in Autumn
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green 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. Cut back low in autumn after flowering. May need staking.
Propagation methods
Layering, Seed, Semi-hardwood cuttings
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Where to grow
Hibiscus laevis (Halberd-leaved rose mallow) will reach a height of 1.8m and a spread of 0.9m after 2-5 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 soil in a sunny site with shelter from strong winds. Best if fed regularly throughout the growing season. Tolerates heat & 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 laevis
Other names
Halberd-leaved rose mallow, Smooth rose mallow, Hibiscus militaris
Genus
Hibiscus Hibiscus
Species
H. laevis - H. laevis is an upright, deciduous perennial with spear-shaped, mid- to dark green leaves divided into three lobes and, from midsummer into autumn, large, white to pink flowers with maroon eyes.
Native to
Central United States, Eastern United States
Foliage
Deciduous
Habit
Upright
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Colour
Flower
White, Pale-pink in Summer; White, Pale-pink in Autumn
Foliage
Mid-green in Spring; Mid-green in Summer; Mid-green 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. Cut back low in autumn after flowering. May need staking.
Propagation methods
Layering, Seed, Semi-hardwood cuttings
Monthly care advice
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Where to grow
Hibiscus laevis (Halberd-leaved rose mallow) will reach a height of 1.8m and a spread of 0.9m after 2-5 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 soil in a sunny site with shelter from strong winds. Best if fed regularly throughout the growing season. Tolerates heat & 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, Zone 4
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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