Photo by Melody

PlantFiles: Parrot Feather, Parrotfeather Water Milfoil
Myriophyllum aquaticum

Family: Haloragaceae
Genus: Myriophyllum (my-ree-oh-FIL-um) (Info)
Species: aquaticum (a-KWA-ti-kum) (Info)

Synonym:Enydria aquatica
Synonym:Myriophyllum brasiliense
Synonym:Myriophyllum proserpinacoides

15 members have or want this plant for trade.

Ponds and Aquatics

6-12 in. (15-30 cm)

3-6 in. (7-15 cm)

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)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)
USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Bright Yellow

Bloom Time:
Mid Summer

Grown for foliage

Other details:
Very high moisture needs; suitable for bogs and water gardens
May be a noxious weed or invasive

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings
By stooling or mound layering

Seed Collecting:
Unknown - Tell us

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By mingsmimi
Thumbnail #1 of Myriophyllum aquaticum by mingsmimi

By Baa
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By Wingnut
Thumbnail #3 of Myriophyllum aquaticum by Wingnut

By DiOhio
Thumbnail #4 of Myriophyllum aquaticum by DiOhio

By jnana
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Thumbnail #6 of Myriophyllum aquaticum by sunnyg

By sunnyg
Thumbnail #7 of Myriophyllum aquaticum by sunnyg

There are a total of 16 photos.
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5 positives
No neutrals
4 negatives

Gardeners' Notes:

Positive NanCcan On Aug 17, 2010, NanCcan from Columbia, MO wrote:

Love my parrot feather; my pond is small enough that I can pull it out by the handfuls mid summer when it is spreading too much. Before my pond was deep enough to stick a parrot feather root in the flower pot with the water lily 3' below the surface, I used to winter it over indoors in a large flower pot filled with water, a couple of baby goldfish, and just a handful of mud in the bottom of the pot. By spring, it would be spindly, but I'd just throw it back in the pond and it spread again every year!

Negative suzrich On Apr 3, 2008, suzrich from Houma, LA wrote:

A problem anywhere other than controlled in a home pond. DO NOT let it get out into waterways. This is like the water hyacith. Lovely only when it's controlled. Very easy to grow. In my pond, it has overwintered with NO protection for 4 years

Negative kittiken On Nov 5, 2007, kittiken from Huntsville, TX wrote:

parrots feather grows well in alkaline soil-tho i've never seen the blooms. each segment will regrow roots n the hotter n more humid it is, the faster it takes over. it is listed in library books for water gardens as a plant that steals oxygen from the water, rather than generating new oxygen. and it is a nuisance when it gets loose.

Negative frostweed On Dec 27, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Parrot Feather, Parrotfeather Water Milfoil Myriophyllum aquaticum is naturalized in Texas an other States and is considered an invasive noxious plant. It is prohibited in Texas.

Positive DiOhio On Feb 7, 2005, DiOhio from Corning, OH (Zone 6a) wrote:

I've had it winter over here in zone 6A as long as the roots were tucked in mud. I used to just let it float but noticed it does much better if planted. I planted some in a new lotus pool last summer and it went bonkers, sprawling way out beyond the edges of the pool. Any part that was out of the water is now mush.

Positive henryr10 On Feb 6, 2005, henryr10 from Cincinnati, OH (Zone 6b) wrote:

I'm not so sure of the Zone classification.
I have it growing in a barrel outdoors.
It is growing quite well after being totally frozen in the ice.
It maybe needs a Zone 5 or 6 classification at least.

Hey if it's a Vermont noxious weed........

Negative jdurha On Aug 26, 2004, jdurha from North Clarendon, VT wrote:

FYI: This plant is a Class A Noxious Weed in the state of Vermont. Its movement, importation, sale, possession, cultivation and/or distrbution is prohibited with fines upto $1000.00 possible

Positive Wingnut On Jun 17, 2004, Wingnut from Spicewood, TX (Zone 8b) wrote:

I just love this plant! It floats around under the surface, feathery "heads" sticking up above the water. Have you ever tried pulling one of the "heads" below water? They don't get wet, but just kind of close up with silvery air bubbles trapped between the fronds. Neat!

These also normally close up at night. Interesting.

Positive easter0794 On Jan 4, 2003, easter0794 from Seffner, FL wrote:

This is a great plant. It keeps my pond naturally filtered. My gold fish breed in it. It grows very well in Florida. I've shared with lots of pond owners.


This plant has been said to grow in the following regions:

Tuscaloosa, Alabama
San Jose, California
Fort Myers, Florida
Hollywood, Florida
Orlando, Florida
Valdosta, Georgia
Barbourville, Kentucky
Houma, Louisiana
Lafayette, Louisiana
Columbia, Missouri
Averill Park, New York
Cincinnati, Ohio
Cleveland, Ohio
Glouster, Ohio
West Union, Ohio
Oklahoma City, Oklahoma
Portland, Oregon
Salem, Oregon
Deer Park, Texas
Huntsville, Texas
Spicewood, Texas
Spring Branch, Texas

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