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Writer's pictureSeth Newell

Caring for Cool Season Grasses in the Transition Zone

A well-maintained lawn is not just beautiful, but also showcases nature's wonders. As a licensed lawn care applicator, I understand the importance of a perfect lawn and the effort required to maintain it throughout the year, particularly in the transition zone. Each season brings its own challenges and opportunities, so you need to adapt your lawn care routine. This guide from Newell Services will provide you with the knowledge and strategies to prepare your lawn for each season. By mastering seasonal lawn care, you can confidently handle any weather and ensure the thriving of your outdoor space. Let's explore the secrets of a flourishing lawn all year!


Image of a tree divided into 4 quadrants with each representing a season

Winterizing Your Lawn: Establishing a Strong Foundation for Optimal Health

As the temperature drops and the days become shorter, it is essential to winterize your lawn to ensure its long-term well-being. By taking appropriate measures in late fall and early winter, you can prepare your lawn to withstand the upcoming challenges and rejuvenate itself in the spring.

Winter Care for Your Cool Season Grasses

  • Final Mowing: As winter approaches, gradually lower the cutting height of your mower to prevent the development of snow mold beneath taller grass. A 2"-2.5" height is recommended for dense turf stands. However, be cautious not to cut the grass too short, as this can expose the roots and make them susceptible to the cold.

  • Fertilization: Apply a high-phosphorus fertilizer in late fall to fortify the root system and ready your grass for freezing temperatures. This will also supply essential nutrients for a rapid green-up in spring.

  • Clean-Up: Take away any fallen leaves, branches, or other debris from your lawn to prevent moisture accumulation and discourage the proliferation of diseases and pests.

Spring Care for Your Cool Season Grasses

With winter nearing its end and the initial signs of spring appearing, it is now the moment to concentrate on jumpstarting the growth and rejuvenation of your lawn. By implementing the following steps, you can create an optimal setting for a thriving and luxuriant landscape.

  • Clean-Up: Take away any fallen leaves, branches, or other debris from your lawn to prevent moisture accumulation and discourage the proliferation of diseases and pests.

  • Evaluate and Mend Destruction: Inspect your lawn for any destruction caused by winter weather, such as patches of dead grass, soil that has been compacted, or areas devoid of vegetation. Mend these areas by overseeding or re-sodding, as necessary.

  • Apply Pre-Emergent: To effectively prevent the germination of common weeds like crabgrass and foxtail, it is advisable to apply pre-emergent weed control products during spring. Following the instructions on the product's label is essential for optimal outcomes.

  • Start Mowing: Kick off your customary mowing routine, ensuring that you do not cut your grass too close to the ground, as this can induce stress and impede its growth. Opt for a moderate cutting height of approximately 3 inches, which is ideal for most cool season grass species.

Summer Care for Your Cool Season Grasses

In the face of rising temperatures and reduced rainfall, it is essential to exercise extra caution to preserve the health and vibrancy of your lawn during the summer heat. By adopting the right strategy, you can shield your grass from the blazing sun and ensure its lush green appearance remains intact throughout the entire season.

  • Irrigate: To guarantee effective hydration for your grass, it is advisable to follow the watering techniques recommended in a previous post. The goal is to provide around one inch of water per week, whether it comes from rainfall or supplemental irrigation.

  • Adjust Mowing Height: Increasing the cutting height of your mower can assist your grass in dealing with the heat by offering more shade to the soil and enhancing moisture retention.

  • Fertilization: Supporting vigorous growth and maintaining a lush green color can be achieved by applying a slow-release fertilizer with a high nitrogen content during the early summer. It is important to be mindful of not over-fertilizing, as this can lead to grass burn and heightened susceptibility to diseases and pests.

  • Monitor for Pests & Diseases: Be watchful of your lawn for any signs of pests or diseases that may thrive in the summer heat, such as grubs or brown patch. Take swift action to tackle any issues using appropriate treatments or seek advice from a professional lawn care service if necessary.

Fall Care for Your Cool Season Grasses

As the vibrant colors of fall emerge and temperatures begin to dip, it is important to shift your attention towards preparing your lawn to withstand the harsh winter months ahead. This involves taking steps to strengthen roots and protect protect plant crowns with a canopy during this time.

  • Aeration and Overseeding: By aerating your lawn, you allow oxygen, water, and nutrients to penetrate deeper into the soil, thereby stimulating the growth of stronger roots. Furthermore, overseeding can effectively address any bare spots and enhance the thickness and overall health of your lawn in preparation for the upcoming seasons.

  • Fertilization: Enhance the development of sturdy roots and accelerate springtime greenery by selecting a fall-appropriate, slow-release fertilizer that is specially designed with a high phosphorus concentration. Furthermore, supplement with potassium fertilizer, as it plays a pivotal role in fostering a thriving root structure.


Maintaining a healthy, thriving, and beautiful landscape requires proper lawn care throughout the entire year. This guide offers seasonal tips that will equip you to handle the challenges that arise with each season and embrace the growth and development of your lawn.

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