Illustration
Appalachian Blues Skullcap
Scutellaria 'Appalachian Blues'
Also comes in purple and white.
Appalachian Blues Skullcap blooms from June through July.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Appalachian Blues Skullcap
Plant it in part shade. It prefers moderate water. It is hardy in USDA zones 4–9. Expect it to reach about 20 in tall and 20 in wide at maturity, in roughly 2 years (a house reading).
No toxicity note is on file for Appalachian Blues Skullcap. That is not a clearance: check its safety for people and pets before planting.
What was checked
Mature height and spread, hardiness zones, sun, water, bloom months and color and the trait tags were checked against named botanical sources for this plant, with what the sources could not settle written down; years to mature size rests on a recorded house rule where no publisher states one, and is marked so; its common name and alternate names have not been checked yet. Each fact above carries its own mark. The planting, spacing and size sections are derived from these checked facts by a fixed rule, not checked separately, and the plant type is the library's own classification.
When to plant Appalachian Blues Skullcap
Plant Appalachian Blues Skullcap in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. In zone 6, the middle of its hardy zones 4 to 9, spring means March to May and fall means August or September. Once settled, it blooms from June to July.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 6, the middle of this plant's hardy range, start with zone 6 in March. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Appalachian Blues Skullcap get?
20 intall5 ft 7 inan adult20 inwideSee Appalachian Blues Skullcap in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
How far apart to plant Appalachian Blues Skullcap
Derived from the mature spread above by a fixed rule, not checked separately: spacing is the spread, center to center.
Space Appalachian Blues Skullcap about 20 in apart, center to center, so each plant has room to reach its full width.
Add Appalachian Blues Skullcap to a garden plan and the planner draws it at its full width, so you see the spacing before you buy.
Where these facts come from
Appalachian Blues Skullcap's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 13 published sources on September 26, 2026. Each one is linked below with every fact it carried, which can include a fact this page still marks as not yet checked, because a source carrying a value is not the same as the value being held to the standard. Facts not in that list, and the planting, spacing and size sections, are not covered by these sources.
- Plant Addictsthe queue's store; sold under the American Beauties Native Plants brandheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil and pests
- plantsnouveau.comPlants Nouveau (the introducer and patent assignee)height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil and diseases
- North Creek Nurseriesthe licensed liner propagatorheight, spread, hardiness zones, sun, water, bloom months and color, trait tags and soil
- abnativeplants.comAmerican Beauties Native Plants (the brand Plant Addicts sells it under)height, hardiness zones, water, bloom months and color, trait tags, soil and pests
- Plant Delights NurseryJuniper Level Botanic Garden, North Carolinaheight, spread, hardiness zones, sun, bloom months and color, trait tags and pests
- US plant patent (Google Patents)Google Patents; inventor Peter Heus, assignee Plants Nouveauheight, spread, hardiness zones, water, bloom months and color, trait tags and diseases
- diggingdog.comDigging Dog Nursery (Albion, California)height, spread, hardiness zones, sun, bloom months and color and pests
- hortmag.comHorticulture magazine (plant profile, Meghan Shinn, 2022-04-12)height, hardiness zones, sun, water, bloom months and color and trait tags
- agsci.psu.eduPenn State Flower Trials (2024, Southeast Agricultural Research & Exte...sun and bloom months and color
- NC State ExtensionScutellaria serrata, SPECIES page, the pollen parent on every accountsun, soil and diseases
- NC State ExtensionScutellaria incana, SPECIES page, the patent's seed parentsoil, diseases and pests
- NC State ExtensionScutellaria ovata, SPECIES page, the introducer's other parentpests
- Plants For A FutureScutellaria lateriflora, ANOTHER SPECIES of the genustoxicity
How the checking works, and what each standard covers, is on the verified plants page.
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Design a garden with this
Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.