Plant Care Blue-Eyed Mary

Blue-Eyed Mary


Collinsia verna

How to care for Blue-Eyed Mary


How often to water your Blue-Eyed Mary

Water needs for Blue-Eyed Mary
0.5 cups
every 9

Blue-Eyed Mary needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in San Francisco, California.

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.

Plant care guide for Blue-Eyed Mary in San Francisco, California

San Francisco, California

39% Low

Growing Blue-Eyed Mary in San Francisco right now

Light needs for plant Blue-Eyed Mary in San Francisco, California

Plant growth potential is currently low 📉

February 7th, 2023

Sunlight intensity as measured by “net radiation” in San Francisco is currently low 📉.

The availability of high quality sunlight in your home impacts ability for plants to thrive and is key in det…

Read more

Light needs for plant Blue-Eyed Mary in San Francisco, California

Sunlight will increase by 39.9% ☀️

February 6th, 2023

San Francisco is trending towards greater sunlight intensity!

The amount of sunlight in San Francisco is expected to increase by 39.9% over the next 2 weeks to an average of 12.0 megajoules of ene…

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Light needs for plant Blue-Eyed Mary in San Francisco, California

Daylight will increase by 1.2 hours 📈

February 7th, 2023

This month, San Francisco is getting an average of 8.3 hours of clear sky sunlight per day.

Hours of daylight will increase by 12.1% over the next two weeks. Your plants will get 10.8 total hours …

Read more

Finding light for Blue-Eyed Mary in your home

Light needs and placement for plant Blue-Eyed Mary: 3ft from a window
3ft or less from
a window

Blue-Eyed Mary may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to keep it happy during this time of reduced sunlight intensity in San Francisco, California ⛅.


How to fertilize Blue-Eyed Mary

Nutrient, fertilizer, and repotting needs for Blue-Eyed Mary: 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 Blue-Eyed Mary after it doubles in size or once a year—whichever comes first.

Difficulty Level

Blue-Eyed Mary is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Water Needs
Sunlight Needs
Growth Pattern
Growing Outdoors

Care Summary for Blue-Eyed Mary

Blue-Eyed Mary

Greg recommends:


0.5 cups every 9 days


< 3ft from a window


Repot after 2x growth

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

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