Eutrochium Species, Spotted Joe Pye Weed, Joe-Pye Weed

Eutrochium maculatum

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Eutrochium (yoo-TRO-kee-um) (Info)
Species: maculatum (mak-yuh-LAH-tum) (Info)
Synonym:Eupatorium maculatum
Synonym:Eutrochium maculatum var. maculatum
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Ponds and Aquatics

Water Requirements:

Requires consistently moist soil; do not let dry out between waterings

Very high moisture needs; suitable for bogs and water gardens

Sun Exposure:

Full Sun

Sun to Partial Shade




Foliage Color:



4-6 ft. (1.2-1.8 m)


36-48 in. (90-120 cm)


USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Where to Grow:

Unknown - Tell us



Bloom Color:

Fuchsia (red-purple)


Scarlet (dark red)

Bloom Characteristics:

Flowers are good for cutting

This plant is attractive to bees, butterflies and/or birds

Bloom Size:

Unknown - Tell us

Bloom Time:

Mid Summer

Late Summer/Early Fall

Other details:

Unknown - Tell us

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:


Propagation Methods:

By dividing the rootball

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; direct sow after last frost

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds


This plant is said to grow outdoors in the following regions:

Grayslake, Illinois

Westmont, Illinois

Linwood, Michigan

Royal Oak, Michigan

Beatrice, Nebraska

Trenton, New Jersey

Elephant Butte, New Mexico

Manorville, New York

Panama, New York

Elizabeth City, North Carolina

Downingtown, Pennsylvania

Leesburg, Virginia

Liberty, West Virginia

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Gardeners' Notes:


On Dec 23, 2015, coriaceous from ROSLINDALE, MA wrote:

All the big species of this genus have lovely, large domed heads of dusty rose flowers which are very attractive to butterflies and other pollinators. The flower color is never red, scarlet, or fuchsia.

Unfortunately, the seed-heads tend to look messy rather than ornamental, and begin to detract from the flowering display within a week of the start of flowering. This is especially obvious with the white-flowered cultivars. Here the species generally blooms for about 6 weeks beginning in late July. At Longwood Gardens in Kennett Square, PA (Z6b), plants cut back in the third week of August were found to rebloom six weeks later.

The tall species form spreading clumps without rhizomes. They are moderately aggressive and need to be divided every few years when the... read more


On Jul 23, 2015, Rickwebb from Downingtown, PA wrote:

There are several very similar species of Joe-Pye native to eastern North America. This Spotted Joe-Pye, E. maculatum, according to "A Field Guide To Wildflowers" by Peterson & McKenny, should have sort of flattish flower clusters, not domed; have deep purple or spotted purple stems not glaucous; have leaves in whorles of 4 or 5 around stems; and grows wild in wet thickets and meadows. Anyway, these plants are very good for pollinators with flowers or with foliage for caterpillars.


On Sep 25, 2008, gsteinbe from Trenton, NJ wrote:

To be honest, I'm not sure if what I have is Eupatorium maculatum or Eupatorium purpureum. From the photos here, I would guess the former. Whichever they are, they've been a positive experience. I like big plants, and these plants are big and not shy. This year, they flopped over a bit much, but they've grown about 5-6 feet tall in mostly sun, mostly moist soil (though not boggy). The flowers are pretty and understated, not flashy in color but noticeable -- unusual lavender or grayish purple, fuzzy umbels. They draw butterflies, other bugs, and birds, blooming in high summer for me in zone 6. They make *tons* of seeds, and they self-sow if allowed. So, overall, they're not a refined, spectacular kind of plant, but they're dependable, hardy, distinctive, fertile, and native. I grew... read more


On Dec 15, 2004, Todd_Boland from St. John's, NL (Zone 5b) wrote:

This is a bold plant for a moist site or near the edge of a garden pond. Plants may reach 6 feet. The leaves are in whorls of 4 or 5 and are deep green and very veined. In late summer plants produce large, flat-topped pink to purple mauve flowers that are very attractive to butterflies and bees. Full sun will produce the best flowering.