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PlantFiles: Downy Skullcap
Scutellaria incana

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Scutellaria (skew-teh-LARE-ee) (Info)
Species: incana (in-KAN-nuh) (Info)

3 vendors have this plant for sale.

6 members have or want this plant for trade.


24-36 in. (60-90 cm)

18-24 in. (45-60 cm)

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:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Medium Blue

Bloom Time:
Late Spring/Early Summer
Mid Summer


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
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:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By Toxicodendron
Thumbnail #1 of Scutellaria incana by Toxicodendron

By KevinMc79
Thumbnail #2 of Scutellaria incana by KevinMc79

By jmorth
Thumbnail #3 of Scutellaria incana by jmorth

By greenthumb99
Thumbnail #4 of Scutellaria incana by greenthumb99

By greenthumb99
Thumbnail #5 of Scutellaria incana by greenthumb99

By Rickwebb
Thumbnail #6 of Scutellaria incana by Rickwebb


1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive Rickwebb On Oct 4, 2014, Rickwebb from Downingtown, PA wrote:

I have seen some Skullcaps before, but I don't really yet know this plant. Looks like a nice perennial of the Mint Family for part-shade and shady locations. Native from Iowa to New Jersey and south in dry woods and woodland clearings. The photo I loaded shows a specimen planted in a woodsy area of Longwood Gardens in se PA at the end of its bloom with a few flowers left and some dry fruit structures in early October of 2014. Sources say that it is easy to grow; can grow also in full sun; for dry or moist soils that should be acid at least a little bit; it attracts bumblebees and hummingbirds; and it blooms in August and September; blends well with Cardinal-flower and Blue Lobelia; but it is not deer resistant.


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

Ashdown, Arkansas
Divernon, Illinois
Saint Charles, Illinois
Piedmont, Missouri
Durham, North Carolina
Bethlehem, Pennsylvania
Kennett Square, Pennsylvania
Rumford, Rhode Island
Leesburg, Virginia

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