Aconitum, Aconite, Monkshood, Monk's Coule 'Bressingham Spire'

Aconitum

Family
Ranunculaceae (ra-nun-kew-LAY-see-ee)
Genus
Aconitum (a-kon-EYE-tum)
Synonym
Spacing
24-36 in. (60-90 cm)
Sun Exposure
18-24 in. (45-60 cm)
Danger
USDA Zone 2a: to -45.5 °C (-50 °F)
USDA Zone 2b: to -42.7 °C (-45 °F)
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Hardiness
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Time
Bloom Time
Bloom Color
Bloom Color
Bloom Time
Other Details
Seed Collecting
Full Sun
Sun to Partial Shade
Fruit Shape
All parts of plant are poisonous if ingested
Pollen may cause allergic reaction
Fruit Size
Blue-Violet
Fruit Colors
Mid Summer
Late Summer/Early Fall
Growing Habit
Herbaceous
This plant is resistant to deer
Smooth
Textured
Days to Maturity
Seed Type
By dividing rhizomes, tubers, corms or bulbs (including offsets)
From seed; direct sow outdoors in fall
Direct sow as soon as the ground can be worked
From seed; direct sow after last frost
Disease Resistance
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds
Seed does not store well; sow as soon as possible
Leaf Type
Foliage Color
Bloom Characteristics
Water Requirements
Perennials
Where to Grow
Other details
Propagation Methods
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Soil pH requirements
Patent Information
Plant Size (check one)
Growing Habit
Growth Rate
Leaf Shape
Leaf Appearance
Degree to which the appearance is present
Leaf Texture (top)
Leaf Texture (bottom)
Leaf Color
Color of Leaf Margin
Leaf Substance
Number of Vein Pairs
Appearance of Margin
Margin Width
Flower Shape
Flower Fragrance
Does it set seed?
Flower Size
Flower Type
Blooming Habit
Foliage Habit
Color Patterns
Awards (if applicable)
Seed Type
Growth Habit
Days to Maturity
Awards (if applicable)
Bloom Shape
Other Details
Pruning Instructions
Kernel Color
Flower Shape
Flower Habit
Bloom Size
Color Pattern
Bloom Shape
Pruning Groups
Bloom Diameter
Heat (Pungency)
Fruit Shape
Fruit Size
Fruit Color
Disease Resistance
Seed Type
Flower Size
Size/Type
Flower Characteristics
Leaf Shape/Type
Leaf Texture
Leaf Color
Propagation
Pollination
Bearing Habit
Rootstock Vigor
Disease Resistance
Fruit Usage
Classification
Regional

This plant is said to grow outdoors in the following regions:

Oakland, California

Brookfield, Connecticut

Montpelier, Vermont

Mc Lean, Virginia

Olympia, Washington

Featured Videos

Gardener's Notes:

3
positives
0
neutral
0
negative
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I
I
Brookfield, CT | October 2007 | positive

Love this plant - it's been in bloom in my garden for weeks, deep blue/purple blooms against cotinus Velvet Cloak, with Hot Lips turtlehe...Read More

M
Montpelier, VT (Zone 4b) | July 2007 | positive

This provides an interesting specimen all growing season. It has deeply serrated leaves and tall spires that do not go unnoticed. In the ...Read More

V
(Zone 8a) | October 2006 | positive

Awarded the RHS AGM (Award of Garden Merit)

Bred by Alan Bloom as his nursery at Bressingham, Norfolk, UK.

...Read More

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