Photo by Melody

PlantFiles: Northern Blue Monkshood
Aconitum noveboracense

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Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Aconitum (a-kon-EYE-tum) (Info)
Species: noveboracense (no-vee-bor-uh-SEN-see) (Info)

4 members have or want this plant for trade.

Category:
Herbs
Perennials

Height:
4-6 ft. (1.2-1.8 m)

Spacing:
15-18 in. (38-45 cm)

Hardiness:
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)

Sun Exposure:
Full Shade

Danger:
All parts of plant are poisonous if ingested

Bloom Color:
Medium Blue

Bloom Time:
Mid Fall

Foliage:
Herbaceous
Smooth-Textured
Shiny/Glossy-Textured

Other details:
Drought-tolerant; suitable for xeriscaping
Self-sows freely; deadhead if you do not want volunteer seedlings next season
This plant is resistant to deer

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing rhizomes, tubers, corms or bulbs (including offsets)
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

Profile:

No positives
3 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral flowercrazy39 On Aug 26, 2005, flowercrazy39 from Manchester, NH wrote:

Very nice blooms but can get very top-heavy if not supported.

Neutral Nookie On May 24, 2003, Nookie wrote:

This plant grows wild in the woods and can be dug and trans-planted in your yard. I have found if you find it in the shade, plant it in the shade, as with any sun exposure with any plants. I transplant lots of plants from the woods, jack-in-the-pulpits, ladyslippers,pink and white, and maiden hair ferns. They are beautiful in my garden and I protect them highly. The deer do not bother them

Neutral smiln32 On Aug 30, 2002, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

This plant is endangered. US Fish and Wildlife Service Division of Endangered Species. 1999. Endangered and Threatened Plants

Regional...

This plant has been said to grow in the following regions:

,
Foxboro, Massachusetts
Manchester, New Hampshire



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