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Hardiness: 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)
Sun Exposure: Light Shade
Danger: All parts of plant are poisonous if ingested
Bloom Color: Blue-Violet
Bloom Time: Mid Summer Late Summer/Early Fall
Foliage: Herbaceous Blue-Green Smooth-Textured
Other details: Requires consistently moist soil; do not let dry out between waterings
Soil pH requirements: 4.6 to 5.0 (highly acidic) 5.1 to 5.5 (strongly acidic) 5.6 to 6.0 (acidic)
Propagation Methods: By dividing the rootball From seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse From seed; stratify if sowing indoors
Seed Collecting: Allow pods to dry on plant; break open to collect seeds
On Oct 11, 2007, ifonly from Brookfield, CT wrote:
Mine are growing in full sun, in a dry part of the garden. Not as bushy as the one in pix said to be growing in Seward Alaska, sad to say, but a beautiful deep purple blue. Nice combined with Hot Lips chelone and Becky shasta daisies.
On Jan 15, 2006, Gabrielle from Washington, IL (Zone 5a) wrote:
I love this plant. It grows under a maple tree where very little will survive, and it blooms so late in the year when most blooms are finished. The blooms are so fascinating, too!
I have read that it is hardy in zones 3-9. Also known as Wolfbane.
On Apr 2, 2005, SalmonMe from Springboro, OH (Zone 6a) wrote:
When handling monkshood, take care to keep plant away from open wounds and be certain to wash hands thoroughly. Wash immediately after cutting back this plant. A second flowering can be encouraged by deadheading to a lateral bud, but second flowering will produce smaller flowers. After second flowering, cut down to basal growth. Use caution when placing this plant in the garden as it is highly toxic.
On Sep 12, 2002, megabrams from Indianapolis, IN wrote:
Regarding the seeds: Seeds must be cold treated first. Place in a fridge for 6 weeks. Seeds have irregular germination times. Germ. can take between 5 and 270 days. Germ. temperature should be 55-60 deg. Plant seeds 1/16" deep in well drained soil.
On Nov 3, 2000, jody from MD &, VA (Zone 7b) wrote:
There are around 100 species in this genus, the most common being napellus. Best cultivated in rich, moist soil and in part shade if summers are hot and dry. They grow to 3' to 6' tall depending on species. The leaves resemble Delphinium leaves. The flowers have the appearance of a monks hood, hence the common name. All parts of this plant are poisonous, this is where the common name of wolfsbane comes from. They used to use it as a poison on wolves. The flowers are deep blue to purple although it is possible (but sometimes difficult) to find species that come in white, pink, and yellow. Most species are hardy zones 4-9.
Regional...
This plant has been said to grow in the following regions:
Seward, Alaska Brookfield, Connecticut Lewes, Delaware Machesney Park, Illinois Washington, Illinois Westchester, Illinois Macy, Indiana Gaithersburg, Maryland Marlborough, Massachusetts Bridgewater, Michigan Howell, Michigan Marine City, Michigan West Kill, New York Cleveland, Ohio Columbus, Ohio Reynoldsburg, Ohio Springboro, Ohio Portland, Oregon Coopersburg, Pennsylvania Lexington, Virginia Green Bay, Wisconsin
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