When you own a decently-sized lawn, its aspect is everything – which is why you have to choose the best time to aerate and overseed lawn! The last things you want to see when leaving the house are dirt patches and dry grass. Luckily, there are two things that you can do to naturally improve the way your lawn looks!
Anyone who wants a better-looking lawn will almost always rely on aeration and seeding. These are not complex procedures, but one can make mistakes during the process. The following article will teach you everything you need to know about this topic!
Lawn Aeration and Seeding
Your lawn needs water, air, and nutrients to favor grass growth. The three elements also prevent soil from compacting. Compacted soil is dense, and grassroots have a difficult time digging deeper and becoming stronger.
Aeration and (over)seeding solve the issue of compacted soil.
The downside is that you cannot approach this solution whenever. What you want to find out is when is the best time to aerate and overseed lawn?
What is Overseeding?
Overseeding means planting new grass seeds into turf without tearing it up or preparing the soil for a new planting session. The primary purpose of overseeding it is to fill the empty patches of your lawn.
The process of filling up these patches has other benefits as well. It improves grass density and helps your lawn’s coloring as well.
In contrast, seeding refers to the same process. The only difference is that you have to do it on clear soil that you usually prepare in advance for the seeding process.
What is Aeration?
Aeration, when referring to lawns, is the process of improving the air gaps present in the soil. You can do this process manually or with the help of various tools. It usually implies puncturing the lawn soil with spikes. A different way of aeration implies removing parts of the soil (cores of 1 in x 2 in (2.5 cm x 5 cm)) from the lawn, which is known as core aeration.
The process of aeration is essential to your lawn because it improves air circulation and provides a better environment for chemical/suspension reactions. These reactions occur in growing patches of grass.
At the same time, aeration favors the transfer of oxygen and carbon dioxide from the soil to the atmosphere. This transfer prevents oxygen starvation and keeps grass leaves slim and smooth. According to research, environments rich in carbon make plants thicken their leaves.
When Is The Best Time To Aerate And Overseed Lawn?
Aeration and overseeding are two different processes. This means that one must consider different factors for each process. After all, it wouldn’t be optimal for you to aerate your lawn right after planting new grass seeds.
When To Aerate Lawn?
The best time to aerate lawn is right before it’s fully grown. Aeration improves the natural growth process of the grass, so it makes sense to aerate the lawn when it is still growing. Moreover, aeration enhances the water, air, and nutrient levels in the soil that fresh grass needs to keep a healthy appearance and color.
The type of grass your lawn has influenced the aeration process as well. Cool-season grass grows in the spring and reaches its final growth stage during fall. Therefore, the best time to aerate a lawn with cool-season grass is early in the spring or fall, as both are growing periods.
Warm-season grass has a longer growing process throughout spring and has difficulty staying green when fall starts. The best time to aerate a lawn with warm-season grass is late in spring or early in the summer.
When Is The Best Time To Overseed Lawn?
Again, the type of grass your lawn has – warm- or cool-season grass – influences the overseeding process as well.
The best time to overseed a lawn with warm-season grass is late in the spring, as this is the active growing period of this type of grass. The best time to overseed a lawn with cool-season grass is late summer or early fall. Cool-season grass needs moisture and cool air for an improved growth process.
When To Mow After Overseeding?
You should mow your lawn at least 2 to 4 weeks after overseeding. This period allows the new grassroots to dig underground and settle in. Some state that you could mow as early as ten days after overseeding but that your mower blade should be on the highest setting.
If you don’t want to damage the freshly grown grass leaves and their roots, you should wait for at least two weeks before considering mowing, even on the highest blade setting. When it comes to how long to wait to mow after overseeding, four weeks is a safe bet.
Top Tips for Maximizing Lawn Overseeding
Overseeding doesn’t imply scattering a couple of bags of grass seeds over your lawn. Even if you don’t have to prepare the soil or the turf like with normal seeding, there are some things you can do and tips to follow to maximize lawn overseeding.
- Mow the lawn on the highest blade setting before overseeding. This ensures that the grass seed will reach the soil and that water and light will reach it;
- Choose the right type and quality of grass seed. You can read more about the types of cool-season grass seeds and warm-season grass seeds before aerating;
- Spread the grass seeds evenly – don’t scatter them over your lawn. You can rely on a hand or lawn spreader for this part;
- Use fertilizers rich in nitrogen and phosphorus a couple of days after watering the freshly planted grass seeds;
- Avoid lawn activities for at least one month after overseeding. Walking over the seeds will damage them and prevents growth;
- In the first two weeks after overseeding, you should water your lawn for about 15-20 minutes.
7 Aeration and Overseeding Mistakes You Should Avoid
Naturally, there are mistakes that you can make during the aeration and overseeding processes. You want to avoid these mistakes as they can affect the final aspect of your lawn.
- You decide to use herbicides and pesticides too early. You should mow new grass about five times before dealing with weeds.
- You decide to use mechanized aeration machines even though you have no experience using them. Improper use can damage your turf. Don’t forget that you can do both processes manually.
- You decide to mow your lawn too soon. After aerating and seeding, you can mow as early as ten days. This depends on the type of grass and seed you have planted, however. Your safest bet is to wait 3-4 weeks before mowing a freshly aerated/overseeded lawn.
- You decide to aerate or overseed at the wrong time of the year. Each process has its own recommended period. You must take into account location, type of grass, and season.
- You decide not to water your lawn after aerating and overseeding. Do not rely on the rain cycle or on the morning dew to keep your lawn moist. In the first month after overseeing/aerating, you must water your lawn for about 20 minutes a day.
- You decide to aerate and overseed in dry periods. You should never aerate or overseed when the soil is dry. Instead, wait for rainfall, as it penetrates deeper parts of the soil, as opposed to watering.
- You decide to aerate and overseed with the wrong equipment. There are various pieces of equipment that you can use – aeration machines, spiked shoes, spike aerators, plug aerators, and so on. The best tool is the one that doesn’t cause further soil compaction.
Aeration and overseeding are essential to a good-looking and healthy lawn. These are the best and simplest processes that you can rely on to prevent dirt patches on your lawn. As simple as they are, they do require a bit of training and research, however.
For example, you must do each process in a different season. The type of grass growing on your lawn influences this aspect as well. Cool-season grass grows in the northern parts of the US, while warm-season grass grows in the southern parts of the US.
Last but not least, you must also consider the right time to mow your lawn, pluck weeds, water the grass, etc. The equipment and aerating/overseeding technique play a big role in the efficiency of the two processes as well.