Anchored Water Hyacinth, Peacock Hyacinth

Eichhornia azurea

Family: Pontederiaceae
Genus: Eichhornia (ike-HORN-ee-uh) (Info)
Species: azurea (a-ZOOR-ee-uh) (Info)


Ponds and Aquatics

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Very high moisture needs; suitable for bogs and water gardens

Sun Exposure:

Full Sun



Foliage Color:



6-12 in. (15-30 cm)

12-18 in. (30-45 cm)


6-9 in. (15-22 cm)


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)

Where to Grow:

Grow outdoors year-round in hardiness zone

Can be grown as an annual


Seed is poisonous if ingested

All parts of plant are poisonous if ingested

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Pale Yellow

Medium Purple

Bloom Characteristics:

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

Flowers are fragrant

Bloom Size:

Unknown - Tell us

Bloom Time:

Blooms repeatedly

Other details:

May be a noxious weed or invasive

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:


Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Seed does not store well; sow as soon as possible


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

Chula Vista, California

Fresno, California

Jacksonville, Florida

Lakeland, Florida

Niceville, Florida

Orange Springs, Florida

Pompano Beach, Florida

Barbourville, Kentucky

Gonzales, Louisiana

Cumberland, Maryland

Lake George, Minnesota

Averill Park, New York

Houston, Pennsylvania

Wilkes Barre, Pennsylvania

Harlingen, Texas

show all

Gardeners' Notes:


On Apr 19, 2016, pondplantfarmer from Lakeland, FL (Zone 9a) wrote:

I have yet to see the difference between a Eichhornia azurea and a Eichhornia crassipes.
Azurea is supposedly "anchored" making it a different species than crassipes. I say azurea is nothing more that a water hyacinth stuck in the mud, "crassipes" is the SAME plant...just free floating. They don't reproduce from seed or bulbs, if someone can grow one from a seed I'll eat my hat. They are NOT poisonous and in fact are edible. I've been growing them for 35 years, and selling them in the US "legally" for years to states that allow ponders to have them. LOTS of misinformation out there about this awesome pond plant. There is also supposed to be yet a third species of Eichhornia found in the US known as the "Brazilian water hyacinth"....I have yet to see this one also but it's a little... read more


On Feb 1, 2016, coriaceous from ROSLINDALE, MA wrote:

The sale, transportation, purchase, and cultivation of this species is federally prohibited throughout the US. "Although outlawed, some species on the Federal Noxious Weeds List have been introduced inten- tionally through aquatic garden and aquarium plant sales and distributed at swap meets."

Ten states have also prohibited the sale and transport of this species, but the federal law covers all 50 states.

Do you want to get your information from scofflaws?

The seeds are dispersed by birds, and easily spread from water gardens to wild areas by t... read more


On May 26, 2010, Kiyzersoze from Coral Springs, FL (Zone 10b) wrote:

I love this plant. The flower is amazing. But they do multiply quickly so please do not release these plants into any waterways. They can cause a major problem and we don't want them to restrict this plant into extinction.


On Aug 28, 2009, greenthum3 from Jacksonville, FL wrote:

We grow a few in our koi pond and they do wonderful until the first freeze. They create a nice green floating carpet and on occassion we get blooms


On Aug 6, 2009, napdognewfie from Cumberland, MD (Zone 6a) wrote:

I love it with it's little air bladders. Spreads nicely, pretty lavender flowers & not at all invasive here. Turns to mush at the first good freeze. I have tried to overwinter a few plants inside in an aquarium under fluorescents but they don't make it so I buy new plants each year.


On Nov 21, 2008, pajaritomt from Los Alamos, NM (Zone 5a) wrote:

This beautiful plant is a major problem to navigation in Louisiana and Mississippi at a minimum. They grow so fast and so tightly that waterways often have to be dredged to get rid of them. As I understand, this plant was imported for the World's Fair decades ago and escaped. It thrives in southern waters.


On Sep 26, 2007, denisejonz from Chula Vista, CA wrote:

I grow it as an annual in my small water pot in full sun. For some reason, it only blooms when the weather here gets very hot (which is rare). Will not tolerate cool daytime temps, when it doesn't get much over 70. Turns to mush when it isnlt hot enough. Good (for me, in the above conditions) ONLY from June-early September.


On Jun 26, 2007, parrotma32578 from Niceville, FL (Zone 8b) wrote:

Although this plant can cause chaos when left unchecked, it is quite spectacular when in bloom. The plants that I have anchored in my bog reward me with beautiful blooms. Plants that are allowed to float freely in my pond have never bloomed. The Hyacinths took a pounding this winter from the freeze, but even though they looked dead, they revived with leaps and bounds. CAUTION: When thinning out, make sure to dispose of unwanted plants in a closed container for trash pickup. Do not, under any circumstances, allow the plant to grow outside of your supervision; they can completely suffocate ponds and lakes.


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

Anchored Water Hyacinth, Peacock Hyacinth Eichhornia azurea is naturalized in Texas and other States and is considered an invasive noxious plant. It is prohibited in Texas.


On Oct 2, 2005, trois from Santa Fe, TX (Zone 9b) wrote:

These plants have volunteered in our Lily pond. They are growing in competition with the Cattails. These are over 3 feet tall, and very lush. We have a berm all the way around the pond, and none can escape on their own. We suspect some portion of one of these plants was attached to a purchased Water Lily.


On Nov 25, 2004, caron from Woodland Park, CO (Zone 4b) wrote:

Not allowed for import to the US and not allowed in any interstate or intrastate transportation without a specific permit from USDA APHIS PPQ (Plant Protection and Quarantine).