The Story
Plant Bio
Erigeron speciosus, known as aspen fleabane, is an upright, clump-forming herbaceous perennial native to western North America. It produces leafy stems branching near the top, terminating in dense arrays of daisy-like flower heads with bright yellow-orange centers.
This species is distinguished by its numerous narrow ray florets, numbering between 70 and 150 per head, which open in shades of lavender, purple, or blue. The basal leaves are spatulate and often wither by the time the summer bloom begins, leaving clasping stem leaves with distinct ciliate margins.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Perennial
Height
36"
Width
24"
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9
Water
Medium
Humidity
Low to medium
Lifespan
Perennial
Native To
North America
Toxicity
Low
Bloom period
Summer – Fall
In flower about 6 months of the year
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Select a planting site in full sun with average, exceptionally well-drained soil.
- Dig a hole twice the width of the root ball and set the plant so the crown sits level with the surrounding soil.
- Water deeply at planting and maintain regular moisture during the first growing season to establish the root system.
- Apply a thin layer of organic mulch around the base, keeping it clear of the immediate crown to prevent moisture retention.
Pro Tip
Clear fallen tree leaves away from the basal rosettes in fall; a wet blanket of decaying foliage over winter quickly induces fatal crown rot.
Keep It Thriving
Care Guide
Do
- Deadhead spent flowers regularly to stimulate continuous blooming into early fall.
- Divide mature clumps every three to four years in spring to maintain vigor and prevent center die-back.
- Ensure the soil drains rapidly, especially during wet winter months.
Don't
- Do not plant in heavy, poorly draining clay soils.
- Do not allow fallen autumn leaves to smother the basal rosettes.
- Do not over-fertilize, as excess nutrients cause weak, floppy stems.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Deadhead | ||||||||||||
| Divide | ||||||||||||
| Prune | ||||||||||||
| Winter Prep |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Multiply
Propagation Methods
Good to Know
Common Questions
Aspen Fleabane questions
What zones can Aspen Fleabane grow in?
Aspen Fleabane is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Aspen Fleabane deer resistant?
Yes — Aspen Fleabane is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Aspen Fleabane bloom?
Aspen Fleabane typically blooms in summer through fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Aspen Fleabane need full sun?
Aspen Fleabane does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Is Aspen Fleabane drought tolerant?
Yes — once established (usually after the first full season), Aspen Fleabane handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.
More Erigeron to compare
Robin's Plantain 'Meadow Muffin'
Erigeron pulchellus 'Meadow Muffin'
Wayne Roderick fleabane
Erigeron glaucus 'Wayne Roderick'
Robin's Plantain
Erigeron pulchellus
Philadelphia Fleabane
Erigeron philadelphicus
Prairie Fleabane
Erigeron strigosus
Horseweed
Erigeron canadensis
Keep exploring
Explore the genus
Grow Aspen Fleabane 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.