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Aconitum napellus (Monkshood)

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Skill rating Beginner
skill rating
Ultimate spread 0.5m
max. spread
Ultimate height 1.5m
max. height
Time to maturity 2-5 years
to maturity
Maintenance level 1 hour care
per year
Toxic - All parts highly toxic if eaten; also harmful via the skin. This plant
is toxic!

Botanical name: Aconitum napellus

Other names: Monkshood


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Genus: Aconitum

Species: A. napellus - A. napellus is a tall perennial producing racemes of purple flowers in mid-summer.

Aconitum napellus is: Deciduous

Flower: Bright-blue in Summer

Foliage: Dark-green in Summer

Habit: Clump-forming, Upright

Toxicity: All parts highly toxic if eaten; also harmful via the skin.

Awards: RHS AGM (Award of Garden Merit)

Plant with: Crocosmia masoniorum (Giant montbretia )

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Watch out for

Pests: Generally pest free

Specific diseases: Powdery mildew

General care

Pruning: Cut down plants in autumn.. REGISTER to read more...

Propagation: Propagate by division between autumn and spring. . REGISTER to read more...

Propagation methods: Division. REGISTER to read more...


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Aconitum napellus (Monkshood) will reach a height of 1.5m and a spread of 0.5m after 2-5 years.


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Suggested uses: Coastal, Flower Arranging, Beds and borders

Cultivation: Best grown in cool, moist, fertile soil under partial shade. Can also tolerate most soils and full sun (if soil is improved with well-rotted organic matter and mulched.)

Suitable for your garden?
In progress indicator
This plant likes... Garden match
Soil types: Clay, Loamy Match unknown
Soil drainage: Moist but well-drained, Well-drained Match unknown
Soil pH: Acid, Alkaline, Neutral Match unknown
Light: Partial Shade Match unknown
Aspect: North, East, West Match unknown
Exposure: Sheltered Match unknown
Hardiness: Hardy (H4) Match unknown

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Aconitum napellus

Comment from Miriam Mesa-Villalba

Monk's-hood makes a magnificent garden plant. Its flowers are visited by bumble bees. Care is needed, however, as all parts of the plant are very poisonous and contact with the foliage may cause skin irritation in some people. It is also called wolf-bane, perhaps because medieval hunters used it as a poison.

  • Views: 371
  • Replies: 0
  • Posted: Tue. 9th June 2009 18:27

We list 22 suppliers who tell us they sell Aconitum napellus (Monkshood). In order to see the list you'll need to either register or log in as a full member.


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Gardens with this plant

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My garden
Palustris Catz

The White House Gardens

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Haven't named it yet!
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