Southern Blue Monkshood, Monk's Hood
Aconitum uncinatum

Family: Ranunculaceae (ra-nun-kew-LAY-see-ee) (Info)
Genus: Aconitum (a-kon-EYE-tum) (Info)
Species: uncinatum (un-sin-AH-tum) (Info)
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Category:

Herbs

Perennials

Height:

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

Spacing:

15-18 in. (38-45 cm)

Hardiness:

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)

USDA Zone 10a: to -1.1 C (30 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Light Shade

Partial to Full Shade

Danger:

All parts of plant are poisonous if ingested

Bloom Color:

Medium Blue

Bloom Time:

Mid Summer

Foliage:

Herbaceous

Smooth-Textured

Shiny/Glossy-Textured

Other details:

Requires consistently moist soil; do not let dry out between waterings

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:

Non-patented

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

Regional

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

Bel Air, Maryland

Frenchtown, New Jersey

Bethlehem, Pennsylvania

Wilkes Barre, Pennsylvania

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Jul 3, 2014, Clint07 from Bethlehem, PA wrote:

In my Zone 6 garden, A. uncinatum has mostly prospered. When it gets taller than 3 feet or so it needs propping up. It has grown much taller than A. fischerii and A. napellus for me.

All three have lost about a third of the stalks during the growing season; the leaves just turn brown. But the surviving ones are very rewarding both for foliage and blooms.