Gregg's Mistflower
Eupatorium greggii
Essentials
At a Glance
Plant Type
Perennial
Height
36 inches
Width
24 inches
Light
Full Sun, Partial Sun
Zones
7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Southwestern U.S. and Mexico
Toxicity
Toxic to livestock if ingested.
The Story
Plant Bio
Eupatorium greggii, now Conoclinium greggii, is a spreading, rhizomatous perennial that produces fluffy, powder-blue to lavender flower clusters. Known as a butterfly magnet, this plant blooms profusely from summer to fall, thriving in heat and drought conditions.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Select well-draining soil with moderate fertility.
- Tuck seeds or cuttings into soil, keeping moist for germination.
- Place in full sun for optimal growth.
- Water regularly during initial establishment, then reduce frequency.
- Apply mulch to retain moisture and suppress weeds.
- Prune lightly after flowering to maintain shape.
Pro Tip
Ensure good air circulation to prevent fungal issues and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water deeply during dry spells 💧
- Prune after flowering to encourage bushier growth 🌱
- Fertilize in spring with a balanced slow-release fertilizer
- Mulch annually to conserve moisture
- Monitor regularly for pests and diseases
Don't
- Avoid overwatering to prevent root rot ❌
- Don’t fertilize late in the season 🌱
- Refrain from heavy pruning during dormancy
- Avoid planting in poorly drained soils ❌
- Don’t neglect pest monitoring
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Prune |
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
Gregg's Mistflower questions
What zones can Gregg's Mistflower grow in?
Gregg's Mistflower is hardy in USDA Zones 7–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Gregg's Mistflower deer resistant?
Yes — Gregg's Mistflower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Gregg's Mistflower bloom?
Gregg's Mistflower typically blooms in late summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Gregg's Mistflower need full sun?
Gregg's Mistflower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Gregg's Mistflower drought tolerant?
Yes — once established (usually after the first full season), Gregg's Mistflower handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Eupatorium to compare
Joe Pye Weed Euphoria Ruby
Eupatorium purpureum 'Euphoria Ruby'
Spotted Joe-Pye Weed
Eupatorium maculatum
Hyssop-leaved Thoroughwort
Eupatorium hyssopifolium
Gateway Joe-Pye Weed
Eupatorium maculatum 'Gateway'
Red Dwarf Joe Pye Weed
Eupatorium maculatum 'Red Dwarf'
Joe Pye Weed
Eupatorium maculatum 'Riesenschirm'
Keep exploring
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Hardy in your zone?
Grow Gregg's Mistflower 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.
