Plant Care Flat Sea Holly

Flat Sea Holly

Also known as

Blue eryngo


Eryngium planum

How to care for Flat Sea Holly


How often to water your Flat Sea Holly

Water needs for Flat Sea Holly
0.5 cups
every 9

Flat Sea Holly 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.

Calculate water needs of Flat Sea Holly

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 Flat Sea Holly in your home

Light needs and placement for plant Flat Sea Holly: 1ft from a window
1ft or less from
a window

Flat Sea Holly love being close to bright, sunny windows 😎.

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

Flat Sea Holly does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Flat Sea Holly in your home 🏡.


How to fertilize Flat Sea Holly

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

Difficulty Level

Flat Sea Holly 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 Flat Sea Holly

Flat Sea Holly

Flat Sea Holly

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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