Blue Fleabane Erigeron acris
Other Common Name(s):
Previously known as:
- Erigeron philadelphicus
- Phonetic Spelling
- er-IJ-er-on AK-riss
- Description
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Native to the north-western US, This delicate wildflower that blooms between April and June can be found growing along forest edges, in forests, meadows, and along the shores of rivers and lakes. It is considered a biennial or short-lived perennial.
Each stem will boast several stalked flower heads. Each flower head is 0.5-1 in. with 100 or more pink to pale magenta 1/4", thread-like rays or petals. The rays/petals are each 1/4" long. Encasing the flower head are several layers of various length bracts that taper to a pointed tip. They may be covered with spreading hairs that can be mixed with minute glandular hairs.
Plants contain both basal foliage and alternate foliage along the stem.
It likes thickets, fields, and open woods. Some shade is tolerated in hotter climates, It is, however, easy to grow in a variety of garden locations. Plant between 1.5 and 2 feet apart. It self-seeds easily. Plant in mass in a cottage, butterfly, or rock garden, or let it naturalize in a meadow.
Fleabane is often confused with plants in the Aster genus, but it blooms later in the season than Asters and the flower bracts do not overlap like they do with Aster flowers.
Insects, Diseases, and Other Plant Problems: It may not thrive in a very hot and humid climate, which may also be factored in some susceptibility to powdery mildew, leaf spots, and rust.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- Cultivars / Varieties:
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Attributes:
- Genus:
- Erigeron
- Species:
- acris
- Family:
- Asteraceae
- Uses (Ethnobotany):
- A tea brewed from leaves was used medicinally as an astringent and diuretic.
- Life Cycle:
- Annual
- Biennial
- Perennial
- Recommended Propagation Strategy:
- Seed
- Country Or Region Of Origin:
- Temp. Northern Hemisphere
- Distribution:
- AK, CA, CO, ID, ME, MI, MN, MT, OR, SD, UT, WA, WY
- Wildlife Value:
- Flowers attract butterflies.
- Play Value:
- Attractive Flowers
- Attracts Pollinators
- Easy to Grow
- Dimensions:
- Height: 3 ft. 0 in. - 1 ft. 6 in.
- Width: 1 ft. 6 in. - 1 ft. 0 in.
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Whole Plant Traits:
- Plant Type:
- Herbaceous Perennial
- Wildflower
- Habit/Form:
- Arching
- Cascading
- Erect
- Growth Rate:
- Medium
- Maintenance:
- Low
- Texture:
- Fine
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Cultural Conditions:
- Light:
- Full sun (6 or more hours of direct sunlight a day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- Sand
- Shallow Rocky
- Soil pH:
- Acid (<6.0)
- Alkaline (>8.0)
- Neutral (6.0-8.0)
- Soil Drainage:
- Good Drainage
- Available Space To Plant:
- 12 inches-3 feet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b
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Fruit:
- Fruit Color:
- Brown/Copper
- Fruit Type:
- Achene
- Fruit Description:
- The brown fruits have a tuft of hairs that are carried by the wind.
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Flowers:
- Flower Color:
- Gold/Yellow
- Pink
- Purple/Lavender
- White
- Flower Inflorescence:
- Head
- Flower Value To Gardener:
- Showy
- Flower Bloom Time:
- Fall
- Summer
- Flower Shape:
- Radial
- Flower Petals:
- 7 - 20 petals/rays
- Flower Size:
- < 1 inch
- Flower Description:
- Daisy-like 1" diameter pink to white thread-like rays with yellow centers.
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Leaves:
- Leaf Color:
- Green
- Leaf Type:
- Simple
- Leaf Arrangement:
- Alternate
- Rosulate
- Leaf Shape:
- Oblanceolate
- Spatulate
- Leaf Margin:
- Dentate
- Entire
- Lobed
- Hairs Present:
- Yes
- Leaf Length:
- 3-6 inches
- Leaf Width:
- 3-6 inches
- Leaf Description:
- Basal leaves are spatula-shaped, lobed and toothed. Moving up the stems, leaves become smaller, alternate, clasping and untoothed. The leaves are smooth to sparsely hairy. Leaves will become smaller and more lance/egg-shaped as they ascend the stem.
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Stem:
- Stem Color:
- Green
- Red/Burgundy
- Stem Is Aromatic:
- No
- Stem Form:
- Straight
- Stem Surface:
- Hairy (pubescent)
- Stem Description:
- The green to reddish stems are erect, single, and unbranched.
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Landscape:
- Landscape Location:
- Meadow
- Naturalized Area
- Rock Wall
- Slope/Bank
- Woodland
- Landscape Theme:
- Butterfly Garden
- Cottage Garden
- Pollinator Garden
- Rock Garden
- Design Feature:
- Mass Planting
- Attracts:
- Butterflies
- Pollinators
- Resistance To Challenges:
- Deer
- Drought
- Problems:
- Short-lived