The Story
Plant Bio
Mary Gregory is known for its striking blue flowers with a white center, which bloom profusely in summer.
This cultivar is particularly noted for its unique flower color combination and compact growth habit.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
18 inches
Width
18 inches
Light
Full Sun, Partial Sun
Zones
5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Southern United States
Toxicity
Non-toxic to humans and pets
Bloom period
Mid-summer – Late summer
In flower about 2 months of the year
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds into well-drained soil in early spring for best germination.
- Mist cuttings regularly to maintain humidity and promote root growth.
- Transplant seedlings when they are 4 inches tall into full sun locations.
- Divide mature plants every 3-4 years in early spring or fall.
- Mulch around plants to retain moisture and suppress weeds for 2-3 inches.
- Water deeply once a week during dry spells to support healthy growth.
Pro Tip
Use well-draining soil and full sun for vibrant blooms and healthy plants.
Keep It Thriving
Care Guide
Do
- Water regularly during dry periods 💧
- Apply a balanced fertilizer in spring 🌱
- Deadhead spent flowers to encourage more blooms
- Mulch to conserve moisture and control weeds
- Divide clumps every few years for vigorous growth
Don't
- Avoid overwatering to prevent root rot ❌
- Don't expose plants to excessive shade
- Refrain from using heavy, clay soil without amendments
- Avoid neglecting pruning after flowering
- Don't forget to protect from harsh winter winds
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Spring Cleanup | ||||||||||||
| Winter Prep |
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
Mary Gregory Stokesia questions
What zones can Mary Gregory Stokesia grow in?
Mary Gregory Stokesia is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Mary Gregory Stokesia deer resistant?
Yes — Mary Gregory Stokesia is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Mary Gregory Stokesia bloom?
Mary Gregory Stokesia 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 Mary Gregory Stokesia need full sun?
Mary Gregory Stokesia does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Mary Gregory Stokesia drought tolerant?
Yes — once established (usually after the first full season), Mary Gregory Stokesia handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
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Stokes' aster
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White Stokes' Aster
Stokesia laevis 'Alba'
Keep exploring
Explore the genus
Hardy in your zone?
Grow Mary Gregory Stokesia 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.