A welcome plant in the perennial border, A. fischeri sends up striking upright spikes of lavender-blue flowers from late summer to early fall when few other blue flowers are in bloom. Each individual flower is shaped like a little helmet or hood, thus the common name Monkshood.
This species has particularly strong stems that will not require staking. The distinctive, deeply divided, dark green, glossy foliage provides interest when the plant is not in bloom.
Height:
18.0-24.0 Inches
Spread:
12.0-18.0 Inches
Hardiness Zones:
4,5,6,7,8
Flower Color:
Purple-blue shades
Foliage Color:
Green shades
Sunlight:
Full Sun (> 6 hrs. Direct Sun) Part Shade (4-6 hrs. Direct Sun)
Water Requirements:
Average Water Needs Consistent Water Needs
Soil Quality:
Fertile Soil Quality
Soil Chemistry:
Acidic Soil (pH < 7.0) Neutral Soil (pH = 7.0) Alkaline Soil (pH > 7.0)
Bloomtime:
Late Summer Early Fall
Attracts Wings:
Bee Friendly
Critter Resistant:
Deer Resistant Rabbit Resistant
Growth Rate:
Medium
Garden Style:
Eclectic
Other Features:
Border Plant Cut Flower Cut Foliage Mass Planting
Origin:
Not Native to North America
Aconitum prefers to be grown in partial shade but will tolerate full sun if plenty of moisture is available. Dry soil leads to stunting. The soil should also be amended with generous amounts of compost and peat moss to give it a slight acidity. They are slow to increase and won't need to be divided often. However, plants may be divided in spring or fall.
Aconitums are highly resistant to diseases and pests, partially because they are very poisonous. USE CAUTION when handling this plant and wear gloves. Do not plant it near vegetable gardens or where small children play. Ingestion of any part of the plant may prove fatal.
Container:
Trade 1 Gallon Container
When to Plant:
Spring to late spring
Finish:
8-10 weeks
Growing Temperature:
50-60° F
Holding Temperature:
45-50° F
Soil PH:
5.8-6.5
EC (What is EC?):
1.5-2.0 pour through method
Fertility:
50-75 ppm at each watering.
Pests & Diseases:
Bumblebees, mites (especially cyclamen mite), leaf and root-knot nematodes.
Botrytis, crown rot, root and stem rots, Verticillium wilt, mosaic, bacterial leaf spot (Pseudomonas), downy mildew, (Plasmopara), powdery mildew, rusts, leaf and stem smut.
Potting & Timing:
Plant in well drained soilless media.
Moisture:
For potting soil use commercial planting media.
Tolerant of moist soils but dislikes wet or soggy soil.
Water in when planting, then allow to dry between waterings until actively growing. Once established and actively growing they will require consistantly moist soil.
Planting Level:
Set crowns just below soil surface.
Other Comments:
All parts are poisonous, WEAR GLOVES WHEN WORKING WITH THIS PLANT. Avoid skin or oral contact with plant juices, and be particularly careful to cover up any open cuts or skin abrasions prior to working with these plants.
Grower Tips:
Optimum temperatures are: 50° F for the first four weeks; then 55° F at night and 60° F during the day.
Height:
18.0-24.0 Inches
Spread:
12.0-18.0 Inches
Hardiness Zones:
4,5,6,7,8
Flower Color:
Purple-blue shades
Foliage Color:
Green shades
Sunlight:
Full Sun (> 6 hrs. Direct Sun) Part Shade (4-6 hrs. Direct Sun)
Water Requirements:
Average Water Needs Consistent Water Needs
Soil Quality:
Fertile Soil Quality
Soil Chemistry:
Acidic Soil (pH < 7.0) Neutral Soil (pH = 7.0) Alkaline Soil (pH > 7.0)
Bloomtime:
Late Summer Early Fall
Attracts Wings:
Bee Friendly
Critter Resistant:
Deer Resistant Rabbit Resistant
Growth Rate:
Medium
Garden Style:
Eclectic
Other Features:
Border Plant Cut Flower Cut Foliage Mass Planting
Origin:
Not Native to North America
Aconitum prefers to be grown in partial shade but will tolerate full sun if plenty of moisture is available. Dry soil leads to stunting. The soil should also be amended with generous amounts of compost and peat moss to give it a slight acidity. They are slow to increase and won't need to be divided often. However, plants may be divided in spring or fall.
Aconitums are highly resistant to diseases and pests, partially because they are very poisonous. USE CAUTION when handling this plant and wear gloves. Do not plant it near vegetable gardens or where small children play. Ingestion of any part of the plant may prove fatal.
Container:
Trade 1 Gallon Container
When to Plant:
Spring to late spring
Finish:
8-10 weeks
Growing Temperature:
50-60° F
Holding Temperature:
45-50° F
Soil PH:
5.8-6.5
EC (What is EC?):
1.5-2.0 pour through method
Fertility:
50-75 ppm at each watering.
Pests & Diseases:
Bumblebees, mites (especially cyclamen mite), leaf and root-knot nematodes.
Botrytis, crown rot, root and stem rots, Verticillium wilt, mosaic, bacterial leaf spot (Pseudomonas), downy mildew, (Plasmopara), powdery mildew, rusts, leaf and stem smut.
Potting & Timing:
Plant in well drained soilless media.
Moisture:
For potting soil use commercial planting media.
Tolerant of moist soils but dislikes wet or soggy soil.
Water in when planting, then allow to dry between waterings until actively growing. Once established and actively growing they will require consistantly moist soil.
Planting Level:
Set crowns just below soil surface.
Other Comments:
All parts are poisonous, WEAR GLOVES WHEN WORKING WITH THIS PLANT. Avoid skin or oral contact with plant juices, and be particularly careful to cover up any open cuts or skin abrasions prior to working with these plants.
Grower Tips:
Optimum temperatures are: 50° F for the first four weeks; then 55° F at night and 60° F during the day.
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