Plant Care grass-leaved flag

grass-leaved flag

Also known as

grass-leaved flag, grass leaved iris, plum iris and plum tart iris


Iris graminea

How to care for grass-leaved flag


How often to water your grass-leaved flag

Water needs for grass-leaved flag
0.5 cups
every 9

grass-leaved flag 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 grass-leaved flag in your home

Light needs and placement for plant grass-leaved flag: 1ft from a window
1ft or less from
a window

grass-leaved flag love being close to bright, sunny windows 😎.

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

grass-leaved flag does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of grass-leaved flag in your home 🏡.


How to fertilize grass-leaved flag

Nutrient, fertilizer, and repotting needs for grass-leaved flag: 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 grass-leaved flag after it doubles in size or once a year—whichever comes first.

Difficulty Level

grass-leaved flag is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Growing Outdoors

Care Summary for grass-leaved flag

grass-leaved flag

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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