Oklahoma Lawn Care Schedule: A Year-Round Guide

Oklahoma's climate can be quite unpredictable, but with a well-planned lawn care schedule, you can keep your lawn looking its best all year round.

In Oklahoma, the ideal time to plant grass is in the fall, typically between September and November, when the weather is cooler and rainfall is more frequent.

During the spring, from March to May, Oklahoma lawns require regular watering, mowing, and fertilizing to promote healthy growth.

In the summer, from June to August, Oklahoma lawns need extra care to withstand the heat and drought, with regular watering, mowing, and pruning essential to prevent damage and maintain appearance.

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Spring is a great time to get your lawn ready for the growing season, and it starts with clearing away leaves, twigs, and other debris that accumulated over winter.

Raking and debris removal is essential to promote healthy grass growth. As temperatures rise and daylight hours increase, your grass starts to emerge from its winter dormancy.

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In the fall, it's crucial to remove fallen leaves to prevent smothering the grass and creating a breeding ground for diseases. Regularly raking leaves will help keep your lawn healthy and prevent problems.

Aeration is a key task in both spring and fall to alleviate soil compaction and improve root growth. This will help your grass grow deeper and stronger.

Weed control is also important in both seasons, and applying pre-emergent herbicides in the spring and post-emergent herbicides in the fall will help prevent weeds from germinating and tackle any remaining weeds.

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Summer is here, and with it comes the challenge of keeping your lawn healthy and resilient in the face of high temperatures and intense sun exposure.

Keep your grass at an optimal height of 3 to 4 inches to shade the soil and retain moisture. This is crucial for Oklahoma lawns, where the heat can be intense.

Water deeply and infrequently to encourage deep root growth. Aim for about 1 to 1.5 inches of water per week, either from rainfall or irrigation.

Over-fertilizing can burn your grass and exacerbate stress, so use a slow-release fertilizer to provide a steady supply of nutrients throughout the summer.

Weeds compete with your grass for water and nutrients, so continue to monitor and control them, spot-treating with herbicides if necessary.

Pests like grubs and chinch bugs can cause significant damage, so keep an eye out for signs of infestation and treat promptly if necessary.

Shaded areas of your lawn may need extra attention, so trim overhanging branches and consider shade-tolerant grass varieties to ensure adequate sunlight.

Monitoring your lawn regularly is key to catching any issues early, so keep an eye out for signs of disease or pest activity and address them immediately.

In the hot and dry months of July and August, you may need to adjust your mowing and watering schedules to help your grass stay cool and moist.

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Spring is a great time to get your lawn in shape for the growing season. Clear away leaves, twigs, and other debris that accumulated over winter to promote healthy grass growth.

Raking and debris removal is a crucial step, as it helps prevent the buildup of dead leaves and twigs that can suffocate your grass. This is especially important in areas with heavy tree coverage.

Aerate the soil to improve air circulation, water absorption, and nutrient uptake. Aeration helps alleviate soil compaction and allows grass roots to grow deeper.

Overseeding is a great way to fill in bare or thin spots in your lawn. This ensures a dense and lush lawn that's perfect for outdoor activities.

Fertilization is essential for vigorous growth, and applying a balanced fertilizer in the spring is a great way to provide your lawn with the nutrients it needs.

As the seasons change, it's essential to get your lawn ready for the winter months ahead. Regularly remove fallen leaves to prevent smothering the grass and creating a breeding ground for diseases.

Aerating your soil is also crucial during the fall season. By doing so, you can alleviate compaction and improve root growth.

Overseeding and fertilization are also key tasks to tackle in the fall. This is an excellent time to overseed and apply a high-phosphorus fertilizer to encourage root development.

Don't forget to tackle any remaining weeds before they go dormant. Apply post-emergent herbicides to ensure your lawn stays healthy and weed-free throughout the winter.

Understanding the different types of grass is crucial for a healthy Oklahoma lawn.

Bermuda grass is a popular choice for Oklahoma lawns due to its heat tolerance and low maintenance requirements.

It's worth noting that Bermuda grass grows best in well-drained soil and full sun.

Buffalo grass is another option for Oklahoma lawns, known for its drought tolerance and ability to thrive in poor soil conditions.

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Warm-season grasses are a great choice for Oklahoma lawns, and Bermudagrass, St. Augustinegrass, Zoysiagrass, and buffalograss are all good options. These grasses thrive in the state's warm climate, but they do require some special care.

To get the most out of your warm-season grass lawn, it's essential to get a soil test. This will reveal the fertilization and soil amendments your lawn needs, and without it, you might end up adding too much or too little fertilizer, which can lead to poor lawn health.

Leaf removal is also crucial, as it prevents the buildup of debris that can suffocate your grass. Simply remove leaves and debris as needed to keep your lawn looking its best.

If you're dealing with winter weeds, apply postemergence herbicides only when weeds are present. If you missed January, apply summer pre-emergent herbicides to prevent weeds from taking over.

Watering is also critical, as warm-season grass needs about 1 inch of water per week. In March, with an average rainfall of 3.06 inches, you'll need to irrigate an additional 1 to 2 inches.

Here's a breakdown of the recommended aeration schedule for different regions of Oklahoma:

Cool Season Grasses are perfect for regions with moderate climates, thriving in temperatures between 40°F and 75°F.

They typically go dormant during the hot summer months, requiring less maintenance and water.

Perennial ryegrass and tall fescue are popular varieties of cool season grasses, known for their ability to withstand heavy foot traffic.

These grasses are often used in lawns, parks, and sports fields due to their durability and ability to recover quickly.

They also require less mowing and fertilization compared to other types of grass, making them a low-maintenance option.

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As the seasons change, your lawn care routine should too. Spring is a season of renewal, and it's the perfect time to prepare your lawn for the growing season by raking away leaves and debris that accumulated over winter.

In Oklahoma, spring temperatures rise and daylight hours increase, causing your grass to emerge from its winter dormancy. Aerate the soil to improve air circulation, water absorption, and nutrient uptake, which helps alleviate soil compaction and allows grass roots to grow deeper.

To keep your lawn healthy and resilient, it's essential to implement the right lawn care practices for each season. In the summer, it's crucial to keep your grass at an optimal height, typically 3 to 4 inches, to shade the soil and retain moisture.

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As we transition into May and June, your lawn's needs change. Lawns typically require about 1 inch of water per week, including whatever the rain brings.

Mowing is crucial during this time. Establish a mowing schedule that keeps your grass about 2.5 to 3 inches tall. This helps shade the soil, reducing water evaporation, and keeps pesky weeds in check.

Preventing weeds from taking over is vital. Post-emergent herbicides are a good way to treat weeds that may have survived or cropped up after your pre-emergent treatment.

Here's a quick rundown of what you should be doing in May and June:

In the winter, it's crucial to clear debris from your lawn to prevent mold and disease from taking hold. Removing any dead leaves, twigs, or branches will help your grass stay healthy.

Frozen or dormant grass is fragile and can be easily damaged. Avoid walking on it or letting kids play on it to prevent damage.

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Fertilization is crucial for a healthy Oklahoma lawn, as it improves turfgrass density, color, and recuperative potential.

A healthy, properly fertilized lawn resists weed invasion and can better tolerate heat, cold, drought, and wear.

Nitrogen is the most important nutrient for turfgrass growth, and it's required in the greatest amounts.

Nitrogen levels in turfgrasses are directly correlated to plant quality, color, and density.

Plant-available nitrogen is often negligible in Oklahoma's native topsoils, making nitrogen fertilizers a must.

Phosphorus and potassium are also essential for healthy plant growth, but their use should be based on a soil test.

Adding phosphorus and potassium above recommended levels can be wasteful, as there's little evidence that it enhances turfgrass quality.

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Turfgrasses require nitrogen, phosphorus, and potassium during establishment, the beginning of each growing season, and during periods of extra-hardy tissue development.

A typical fertilization program for bermudagrass lawns involves 5 pounds of nitrogen applied over 1000 square feet in five applications.

This can be achieved through a combination of spring and fall fertilizations, with summer applications made with a straight nitrogen source.

Reducing summer nitrogen fertilizer applications can help achieve good bermudagrass quality and lower maintenance requirements.

Fertilizations made prior to spring green-up are less effective than those made two weeks following green-up.

Applying more than 1 pound of nitrogen per 1000 square feet can lead to lush fall growth, which can hinder bermudagrass winterization and lead to Spring Deadspot Disease.

Slow-release fertilizers like Scott’s Turf Builder, Milorganite, and sulfur-coated urea are a good option for summer fertilizations, as they can be applied less frequently at higher rates.

A possible fertilization program for bermudagrass lawns includes a spring fertilization with a water-soluble fertilizer, a June fertilization with a slow-release fertilizer, and an August fertilization with a slow-release fertilizer.

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Lawn Maintenance is crucial for a healthy and thriving Oklahoma lawn. To keep your grass looking its best, it's essential to mow at the right height and frequency.

Mowing height varies depending on the type of grass. For warm-season grasses like Bermudagrass, the recommended mowing height is between 0.5-0.75 inches during the summer months, and 1-1.25 inches during the fall and winter months. Table 3 in the article provides a comprehensive list of mowing heights for different types of grass.

It's also important to mow at the right time. Ideally, you should mow your lawn when it needs it, rather than following a set schedule. This means cutting no more than a third of the leaf area at any one time. For example, if you have U-3 Bermudagrass that reaches 1.5 inches, it's best to cut it at 1 inch.

Proper mowing equipment maintenance is also crucial. Keep your mower sharp and in good operating condition to prevent bruising leaf tips and reducing growth. It's also a good idea to vary your mowing pattern throughout the growing season to distribute wear and improve turf appearance.

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To avoid tearing the turf, make turns on sidewalks and drives or make wide turns. And, of course, never mow wet grass, as it's harder to get a quality cut and can lead to disease and other issues. By following these simple tips, you can keep your Oklahoma lawn looking its best all year round.

Watering your lawn is one of the most misunderstood aspects of turfgrass culture, often resulting in too frequent and too light watering. This encourages shallow rooting, soil compaction, thatch accumulation, and weed seed germination.

Turf should not be irrigated on a regular schedule but on one that is determined by need. This means you should water your lawn when it shows visual symptoms of water need, such as "foot printing" and a blue-gray appearance.

Irrigating early in the morning is an ideal time to water your lawn, as it minimizes evaporation and reduces the risk of fungal diseases. Water deeply and infrequently to encourage deep root growth, aiming for about 1 to 1.5 inches of water per week.

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You should check if the soil is wet to a 6-inch depth after watering, and if it's not, repeat the cycle until the soil is properly irrigated. This may take several times, but it's worth it to encourage deep rooting.

If you notice that the area begins to puddle and run-off is occurring, stop irrigating and allow the water to soak into the soil. This will prevent overwatering and reduce the risk of water-borne diseases.

Sandy coarse-textured soils absorb water faster but retain less water than fine-textured soils like loams and clays. This means you may need to water more frequently on sandy soils, but with less water each time.

Mowing is an essential part of lawn maintenance, and it's crucial to get it right to keep your lawn healthy and looking its best.

To determine the ideal mowing schedule, you should consider the amount of plant growth between mowings, which is affected by soil moisture, nutrients, temperature, and sunlight.

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Cutting turfgrasses at the right height is vital, and the recommended heights vary depending on the type of grass. For example, Bermudagrass should be cut between 0.5-0.75 inches in May-August and 1-1.25 inches in September-April.

Table 1: Recommended Mowing Heights for Different Turfgrasses

It's also essential to keep your mower sharp and in good operating condition to prevent bruising leaf tips and reducing growth. A dull mower can make your lawn look dull and unhealthy.

To avoid tearing the turf, make wide turns when mowing and try to avoid mowing over the same spot multiple times. Additionally, it's best to mow your lawn when it's dry to prevent clumps from forming on the mower and to reduce the risk of spreading disease organisms.

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Aerification is a crucial step in maintaining a healthy lawn. It involves removing compacted soil to improve air and water circulation, allowing grass roots to grow deeper.

Regular aeration can improve root growth and alleviate soil compaction. This is especially important for lawns in Oklahoma, where many would benefit from one or two core cultivations each year.

To aerate your lawn, you'll need to remove 0.5- to 1-inch diameter cores to a depth of at least 2 inches. This can be done using a machine with hollow metal tines or spoons.

The best time to aerate is during periods of active plant growth, such as late winter or early spring for warm-season turfgrasses, and early fall for cool-season turfgrasses.

As a homeowner in Oklahoma, it's essential to keep your lawn pest-free to maintain its health and appearance.

White grubs, chinch bugs, and billbugs are common pests that can damage your Oklahoma lawn.

Regularly watering your lawn can attract white grubs, which can lead to significant damage.

Chinch bugs are typically found in areas with heavy thatch buildup, so it's crucial to maintain a healthy thatch level.

In Oklahoma, the best time to control chinch bugs is in late spring to early summer, when they are most active.

Billbugs, on the other hand, are typically active from late spring to early fall, so be sure to monitor your lawn during this period.

To control pests like chinch bugs and billbugs, consider using insecticides or introducing beneficial insects to your lawn.

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