Plant Care Ray Grass

Ray Grass

Also known as

Perennial ryegrass, Perennial ryegrass, English ryegrass, Winter ryegrass, Ray grass and Perennial Rye


Lolium perenne

How to care for Ray Grass


How often to water your Ray Grass

Water needs for Ray Grass
0.5 cups
every 9

Ray Grass needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot located in Philadelphia, Pennsylvania.

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 Ray Grass in Philadelphia, Pennsylvania

Philadelphia, Pennsylvania

45% Low

Growing Ray Grass in Philadelphia right now

Light needs for plant Ray Grass in Philadelphia, Pennsylvania

Plant growth potential is currently low 📉

November 27th, 2021

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

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

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Light needs for plant Ray Grass in Philadelphia, Pennsylvania

Sunlight intensity will decrease by 30.7% ☀️

November 27th, 2021

Philadelphia is trending towards lower sunlight intensity!

The amount of sunlight in Philadelphia is expected to decrease by 30.7% over the next 2 weeks to an average of 6.9 megajoules of energy p…

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Light needs for plant Ray Grass in Philadelphia, Pennsylvania

Daylight will decrease by 1.2 hours 📉

November 27th, 2021

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

Hours of daylight will decrease by 11.5% over the next two weeks. Your plants will get 9.2 total hours of…

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Finding light for Perennial ryegrass in your home

Light needs and placement for plant Ray Grass: 1ft from a window
1ft or less from
a window

Ray Grass love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to ensure it receives enough light to survive during this time of reduced sunlight intensity in Philadelphia, Pennsylvania ⛅.

Ray Grass does not tolerate low-light 🚫.


How to fertilize Ray Grass

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

When to repot Ray Grass

Nutrient needs for plant Ray Grass in Philadelphia, Pennsylvania

Is this a good time of year to repot? No ⏳

November 27th, 2021

The growing potential in Philadelphia is very low 📉.

Repotting in late fall or winter when the day lengths are shorter can be very stressful for a plant and cause it to go into shock.

It's bes…

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Difficulty Level

Ray Grass is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!

Water Needs
Sunlight Needs
Growth Pattern
Growing Outdoors

Care Summary for Ray Grass

Ray Grass

Greg recommends:


0.5 cups every 9 days


< 1ft from a window


Repot after 2x growth

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

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