Plant Care Eichhornia crassipes

Eichhornia crassipes

About Eichhornia crassipes

Eichhornia crassipes is a relatively rare houseplant 🌿 that is a fun challenge to grow and needs regular watering to thrive. They do best in long-lasting, direct light ☀️ and should be less than 1 foot from a window.

Eichhornia crassipes likes soil that is good at retaining moisture. Your plant shouldn't need added fertilizers if you repot each time it doubles in size.

Eichhornia crassipes belongs to the Pontederia genus, and is native to South Tropical America.


Pontederia crassipes

Also known as

Eichhornia crassipes, Water Hyacinth, common water hyacinth, Pontederia, Oshunae and Eichhornia crassipes

How to care for Eichhornia crassipes


How often to water your Eichhornia crassipes

Water needs for Eichhornia crassipes
0.5 cups
every 9

Eichhornia crassipes needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Portland, Oregon.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Eichhornia crassipes

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size


Check the growing potential in your area

A plant's growing potential is determined from its location, the time of year, and current local weather.

Plant care guide for Eichhornia crassipes in Portland, Oregon

Portland, Oregon

25% Very Low

Growing Eichhornia crassipes in Portland right now

Light needs for plant Eichhornia crassipes in Portland, Oregon

Plant growth potential is currently very low 📉

January 28th, 2023

Sunlight intensity as measured by “net radiation” in Portland is currently very low 📉.

The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in det…

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Light needs for plant Eichhornia crassipes in Portland, Oregon

Sunlight will increase by 46.4% ☀️

January 28th, 2023

Portland is trending towards greater sunlight intensity!

The amount of sunlight in Portland is expected to increase by 46.4% over the next 2 weeks to an average of 8.1 megajoules of energy per m2

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Light needs for plant Eichhornia crassipes in Portland, Oregon

Daylight will increase by 1.2 hours 📈

January 27th, 2023

This month, Portland is getting an average of 7.2 hours of clear sky sunlight per day.

Hours of daylight will increase by 13.7% over the next two weeks. Your plants will get 9.9 total hours of day…

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Finding light for Eichhornia crassipes in your home

Light needs and placement for plant Eichhornia crassipes: 1ft from a window
1ft or less from
a window

Eichhornia crassipes love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Portland, Oregon ⛅.

Eichhornia crassipes does not tolerate low-light 🚫.


How to fertilize Eichhornia crassipes

Nutrient, fertilizer, and repotting needs for Eichhornia crassipes: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Eichhornia crassipes after it doubles in size or once a year—whichever comes first.

When to repot Eichhornia crassipes

Nutrient needs for plant Eichhornia crassipes in Portland, Oregon

Is this a good time of year to repot? No ⏳

January 24th, 2023

The growing potential in Portland is very low 📉.

Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.

It's best to…

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Difficulty Level

Eichhornia crassipes can be challenging to care for, according to some plant parents. Check out the reviews down below to learn from their experiences!

Water Needs
Sunlight Needs
Growing Outdoors

Care Summary for Eichhornia crassipes

Eichhornia crassipes

Eichhornia crassipes

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

Based on your location in Portland, Oregon, the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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