Plant Care Annual Marsh Elder

Annual Marsh Elder

Also known as

annual marsh elder and sumpweed


Iva annua

How to care for Annual Marsh Elder


How often to water your Annual Marsh Elder

Water needs for Annual Marsh Elder
0.5 cups
every 9

Annual Marsh Elder 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


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.

Select a city to check sunlight intensity

Finding light for Annual Marsh Elder in your home

Light needs and placement for plant Annual Marsh Elder: 1ft from a window
1ft or less from
a window

Annual Marsh Elder love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Annual Marsh Elder does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Annual Marsh Elder in your home 🏡.


How to fertilize Annual Marsh Elder

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

Water Needs
Sunlight Needs
Growth Pattern

Care Summary for Annual Marsh Elder

Annual Marsh Elder

Greg recommends:


0.5 cups every 9 days


< 1ft 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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