Spotted 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


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)

Sun Exposure:

Full Sun

Sun to Partial Shade



Bloom Color:

Fuchsia (Red-Purple)


Scarlet (Dark Red)

Bloom Time:

Mid Summer

Late Summer/Early Fall





Other details:

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

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

Very high moisture needs; suitable for bogs and water gardens

Flowers are good for cutting

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 has been said to grow in the following regions:

Grayslake, Illinois

Westmont, Illinois

Linwood, Michigan

Beatrice, Nebraska

Trenton, New Jersey

Elephant Butte, New Mexico

Panama, New York

Elizabeth City, North Carolina

Leesburg, Virginia

Liberty, West Virginia

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Gardeners' Notes:


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.