Plant Care American Spongeplant

American Spongeplant

Also known as

frog's-bit and frogbite


Limnobium spongia

How to care for American Spongeplant

💦 Water

How often to water your American Spongeplant

Water needs for American Spongeplant
0.5 cups
every 9

American Spongeplant needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

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

Water 0.5 cups every

Does your plant get direct sunlight?

Select the pot size

☀️ Light

Finding light for American Spongeplant in your home

Light needs and placement for plant American Spongeplant: 3ft from a window
3ft or less from
a window

American Spongeplant may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

Select your region to see how the current weather in your area affects the placement of American Spongeplant in your home 🏡.

🪴 Nutrients

How to fertilize American Spongeplant

Nutrient, fertilizer, and repotting needs for American Spongeplant: 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 American Spongeplant after it doubles in size or once a year—whichever comes first.

Care Summary for American Spongeplant

American Spongeplant

Greg recommends:


0.5 cups every 9 days


< 3ft from a window


Repot after 2x growth

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

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