Common Monkshood
Aconitum napellus
ak-oh-NY-tum nap-EL-us
Perennials: Flower
Zone
3: -40° to -30°
Min. Temp
Hardy: 28°
Sends up striking, upright spikes of flowers when few other blue flowers are in bloom. Rarely bothered by pests or diseases.
Appearance
Summer Foliage
Green
Fall Foliage
Purple
Flower Color
Blue
Blooming Time
Early Summer - Mid Summer
Habit
Upright
Height
3–4 ft
Spread
12–18 in
Form
Spike
Characteristics
Type
Open-Pollinated
Safety
Poisonous
Growth Rate
Slow
Tolerance/Resistance
Drought Tolerant
Attracts
Attracts Hummingbirds; Attracts Honeybees & Pollinators
Uses/Placement
Woodland
Optimal Growing Conditions
Sun Exposure
Full Sun - Part Sun
Soil Texture
Loamy
Soil Drainage
Moderately well-drained
Soil Moisture
Average to Moist
Soil PH
Slightly Acidic: 6.0-6.5
PH Tolerance
Prefers slightly acidic soil
PH Correction
Low pH may cause nutrient toxicity
Soil Amendment(s)
Organic Matter Recommended
Fertilizer
Moderate Feeder
Fertilizer Formula
Balanced Fertilizer
Fertilizer Timing
Early Spring
Micronutrients
Trace Minerals Beneficial
Care
Care Level
Moderate
Behavior and Propagation
Spreading
Moderate Spreader
Propagation Method
Benefits from Pollinators
Propagation Licensing
Open propagation permitted
Division Timing
Spring or Fall Division