Black Hollyhock | Alcea rosea 'Nigra'
Dramatic deep chocolate-maroon
Grown by Mike's perennial specialists
UK
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Plant diary
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Black Hollyhock
Alcea rosea 'Nigra'
- Command instant attention with the phenomenal, nearly black, deep chocolate-maroon flowers of this incredibly dramatic, highly sought-after perennial.
- Alcea rosea 'Nigra' features spectacular, silky, single blooms that reveal a striking, luminous pale yellow center when they open in the summer sun.
- This alcea creates an unbelievable, high-contrast architectural statement, looking absolutely breathtaking when planted alongside crisp white or bright yellow perennials.
- It is remarkably drought-tolerant and thrives in poor soils, making it the ultimate, zero-fuss hero for adding towering, moody elegance to a hot border.
- You will be amazed by the sheer volume of wildlife it attracts, offering a massive, easily accessible nectar source for busy summer bees.
What to expect
Supplied as
Eventual height
Eventual spread
Flower colour
Habit
Hardiness
Will this grow in my garden?
Can I grow this in a pot?
Yes, Black Hollyhock needs a large, heavy pot and may require staking for support.
How big does it get?
Black Hollyhock typically reaches a mature height of 180 cm and a spread of 60 cm.
How much sunlight does this need?
Black Hollyhock requires full sun for at least 6 hours a day.
What kind of soil does this plant prefer?
Black Hollyhock prefers well-drained, moderately fertile soil.
How much watering does this plant need?
Black Hollyhock needs about 2.5 centimetres of water per week, keeping the soil evenly moist.
Will this plant need pruning?
Black Hollyhock | Alcea rosea 'Nigra' does not strictly need pruning, but regular deadheading will encourage more flowering. Cut the plant back to the base in late autumn or early spring.
How hardy is this plant?
Black Hollyhock is fully hardy (H6), tolerating temperatures down to -15°C to -20°C. It is robust and grows reliably in all regions of the UK.
The wider garden
UK
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Our perennial plants are raised by several of our most trusted UK growers, with only the very finest plants making the cut to be sent on to our Cotswolds nursery. Your perennials are double (then triple) checked over by our team – this is where being pernickety is a good thing – before being sent to you in the perfect condition for planting. Happy days.
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