Plant Care Sea Fennel

Sea Fennel

Also known as

Peter's Cress, Peter's Cress, Sea fennel, Crithmum, Rock samphire and Samphire


Crithmum maritimum

How to care for Sea Fennel


How often to water your Sea Fennel

Water needs for Sea Fennel
0.5 cups
every 9

Sea Fennel 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 Sea Fennel

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 Peter's Cress in your home

Light needs and placement for plant Sea Fennel: 3ft from a window
3ft or less from
a window

Sea Fennel 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 Sea Fennel in your home 🏡.


How to fertilize Sea Fennel

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

Water Needs
Sunlight Needs
Growing Outdoors

Care Summary for Sea Fennel

Sea Fennel

Sea Fennel

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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