How to Maintain Perennial Ryegrass in Summer
March 02, 2023

How to Maintain Perennial Ryegrass in Summer

By Adam Chronister

Are you looking for the perfect grass seed to keep your lawn healthy during those hot summer months? Perennial ryegrass may be just what you need. This hardy, resilient type of grass is designed to withstand higher temperatures and still maintain its lush green color.

In this blog post, we'll explore how to maintain perennial ryegrass in summer, as well as some tips for growing it and the benefits that come with having it on your property. So if you're interested in learning more about why perennial ryegrass might be a great choice for your yard, read on.

How to Maintain Perennial Ryegrass in Summer?

Summer is the time of year when perennial ryegrass needs extra care to stay healthy and vibrant. To ensure your perennial ryegrass lawn looks its best, there are a few steps you should take:



Perennial ryegrasses require deep but infrequent watering. This means that instead of sprinkling it lightly every day, you should water it 1 inch once or twice a week. Make sure to check the soil before watering; if it’s already moist, then skip the watering for that day.




Mow your grass regularly at the recommended height for your area (usually between 2-3 inches). If you mow too short, this can cause damage to the roots and leave them vulnerable to pests and disease.

Also, be sure to sharpen your blades frequently so they don’t tear or rip at the grass as they cut through it.



Fertilize with a slow-release fertilizer in early summer (May/June) and again in late summer (August/September). This will help keep your grass looking lush throughout the season without having to worry about overfertilizing or burning out delicate root systems with too much nitrogen content in one application.

Weed & Pest Control

Weed & Pest Control

Keep an eye out for any weeds or pests that may have taken up residence on your lawn during summer months – these can quickly overtake an otherwise healthy patch of turfgrass if left unchecked.

Pull any weeds by hand whenever possible; spot treat areas affected by pests using organic methods such as neem oil spray rather than chemical pesticides whenever possible.

Key Takeaway: To keep perennial ryegrass healthy during summer: - Water deeply but infrequently. - Mow regularly at the recommended height. - Fertilize with a slow-release fertilizer in early and late summer. - Pull weeds by hand, use organic pest control methods when possible.

What is Perennial Ryegrass?

Perennial ryegrass is a cool-season grass that is widely used in lawns and turfgrass areas. It has a deep green color, grows quickly, and is relatively easy to maintain. This type of grass can be found in many parts of the United States and is popular among homeowners who want an attractive lawn.

Perennial ryegrass produces long stems with small seed heads at the end. The leaves are narrow and pointed with a light green or blue-green hue depending on the variety.

Perennial ryegrass spreads by rhizomes which allows it to fill in bare spots quickly when planted as part of a mix with other grasses such as Kentucky bluegrass or tall fescue varieties.

What is Perennial Ryegrass

When you plant perennial ryegrass, it’s important to choose the right variety for your area’s climate conditions since some varieties do better in certain regions than others.

For example, planting annual ryegrass, which is best known for its use in overseeding warm season grasses in moderate climates, while perennial ryegrass is the preferred choice for winter overseeding and cooler temperatures like those found in colder states like Minnesota or Wisconsin. Moreover, perennial ryegrass germinates best with temperatures between 68F and 77F.

Mowing of perennial ryegrass should be done regularly throughout its growing season, from spring to fall. Aim for at least one mow per week during peak growth periods; however, this can be reduced in slower times such as winter when the cold weather causes a significant decrease in growth rate.

Fertilization is also essential and should be done with products tailored for cool-season turfgrasses like perennial rye grass mixes that contain nitrogen and phosphorus fertilizers along with trace elements like iron sulfate or magnesium sulfate if needed based on soil tests results from your local extension office.

Finally, watering needs vary depending on temperature but generally speaking a turf-type perennial ryegrass will need about 1 inch per week during summer months when temperatures are high and rainfall isn't enough to keep up with evaporation rates from heat exposure.

During cooler months, less water may be required so always check your local weather forecast before deciding how much irrigation you need for optimal health.

Perennial Ryegrass is a valuable grass species that offers excellent durability and disease resistance. To ensure your lawn stays healthy in the summer months, it's important to understand how to maintain this grass type properly - which we'll cover in the next section.

Key Takeaway: Perennial ryegrass is a popular choice for lawns due to its deep green color and fast growth. To ensure success, choose the right variety for your climate, mow regularly during peak growing season, fertilize with cool-season products, and water at least 1 inch per week in summer.

Benefits of Perennial Ryegrass

Perennial ryegrass is a popular choice for homeowners looking to establish an attractive lawn. It grows quickly and can tolerate heavy traffic from pets or children playing on it. Additionally, it’s low maintenance compared to other types of grasses so you won’t have to spend as much time caring for it.

One of the biggest benefits of perennial ryegrass is its quick growth rate and high germination rate which means you will have established perennial ryegrass lawns faster than with some other varieties.

The seeds are small enough that they can easily be spread by hand over large areas without needing special equipment like a seed spreader machine. Plus, once planted, perennial ryegrass will begin growing within 7-14 days rather than 3+ weeks like some slower-growing varieties require.

Perennial ryegrass is also known for its ability to withstand heavy foot traffic, due to its thick blades and dense root system. This makes it an ideal choice for those who frequently have people walking on their lawn or playing sports such as soccer or football.

The grass's resistance to compaction ensures that the turf remains lush and healthy despite frequent use.

With the right knowledge and preparation, you can ensure your summer lawn is healthy and thriving with perennial ryegrass.

FAQs in Relation to Perennial Ryegrass in Summer

Will perennial ryegrass grow in summer?

It will grow in the summer months if given enough water and shade to keep it from getting too hot. However, its growth rate may slow down significantly during this time due to the higher temperatures.

In order for perennial ryegrass to thrive in the summer months, proper maintenance is key - including regular mowing, watering deeply but infrequently, and providing adequate shade when possible.

What happens to ryegrass in summer?

Ryegrass is a winter grass, meaning it thrives in cooler temperatures and goes dormant during the summer months. During this time, rye grass will turn brown and stop growing until cooler temperatures return.

It is important to note that ryegrass may not survive extreme heat or drought conditions, so supplemental watering and care should be taken if these conditions are present in your area. With proper care and maintenance, however, ryegrass can still remain healthy throughout the summer months.

Does perennial ryegrass go dormant in summer?

Perennial ryegrass is a cool-season grass, meaning it will go dormant during the summer months when temperatures are higher.

It typically begins to turn brown and lose its lush green color in late spring or early summer as the days become longer and warmer. During this time, it may appear dead but can quickly revive with cooler temperatures during early spring and fall.

Will ryegrass grow in 90-degree weather?

No, ryegrass does not typically grow in 90-degree weather. It is one of the cool season grasses that prefer lower temperatures and is best suited for climates with mild winters and cool summers.

Ryegrass may struggle to survive in extreme heat, so it is important to select a grass seed that can withstand the climate of your area. If you live in an area with hot summers, consider selecting a warm-season grass seed that is more tolerant of high temperatures.


Perennial ryegrass is a great choice for summer lawns, as it can withstand the pressure and provide lush green grass. With proper maintenance and care, you can keep your perennial ryegrass looking its best throughout the summer months.

Watering regularly, mowing correctly, fertilizing appropriately, and using weed control measures are all important steps to take when caring for your perennial ryegrass in summer. By following these tips, you will be able to enjoy a beautiful lawn of healthy perennial ryegrass all season long.

Swell Seed understands the importance of having a healthy, lush lawn all year round. That’s why we are committed to providing quality perennial ryegrass seed that can thrive in most conditions.

Our experts have carefully selected and blended varieties so you don’t have to worry about finding just the right mix for your needs - it’s already been done!

With our seeds, you get long-lasting results without sacrificing beauty or performance. Check out Swell Seed today and ensure your lawn stays green throughout every season!