Hoary Skullcap
Scutellaria incana
Essentials
At a Glance
Plant Type
Perennial
Height
30 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Eastern and Central US
Toxicity
Non-toxic
The Story
Plant Bio
Scutellaria incana, commonly known as Hoary Skullcap, is a perennial herb known for its blue flowers and its adaptability to different soil types. This species is particularly valued for its drought resistance and ability to thrive in poor soil conditions.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-draining soil in early spring.
- Mist cuttings regularly to maintain humidity during rooting.
- Transplant seedlings when they are sturdy, usually after the last frost.
- Water consistently, keeping soil moist but not waterlogged.
- Fertilize with a balanced, organic fertilizer in spring and summer.
- Divide mature plants every 2-3 years to promote healthy growth.
Pro Tip
Ensure well-draining soil and provide partial shade for optimal growth.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist 🌱
- Prune after flowering to encourage bushiness
- Apply organic mulch to retain moisture
Don't
- Avoid overwatering to prevent root rot ❌
- Don’t expose to harsh, direct afternoon sun in hot climates
- Avoid heavy fertilization which can cause legginess
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Hoary Skullcap questions
What zones can Hoary Skullcap grow in?
Hoary Skullcap is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Hoary Skullcap deer resistant?
Yes — Hoary Skullcap is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Hoary Skullcap bloom?
Hoary Skullcap typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Hoary Skullcap need full sun?
Hoary Skullcap does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Hoary Skullcap drought tolerant?
Yes — once established (usually after the first full season), Hoary Skullcap handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Scutellaria to compare
Heart-leaved Skullcap
Scutellaria ovata
Blue Sky Skullcap
Scutellaria montana 'Blue Sky'
Resinous Skullcap
Scutellaria resinosa
Baikal Skullcap
Scutellaria baicalensis
Somerset Skullcap
Scutellaria altissima
Texas Rose Skullcap
Scutellaria suffrutescens 'Texas Rose'
Keep exploring
Explore the genus
Collections featuring this plant
Hardy in your zone?
Grow Hoary Skullcap with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
