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can you overseed and fertilize at the same time

Can You Fertilize and Overseed at the Same Time?

Modern-day seeds and the HYV variety of seeds are hard to grow and flourish on their own unless and until some quantity of fertilizers is added to the seeds. Fertilizers add a boost to the growth of the plants properly.

But, what is the correct time and way to add fertilizers to the growing saplings? can i fertilize and seed at the same time? Many people wonder if they can fertilize and overseed at the same time. Let us find that out!

Can you fertilize and overseed at the same time?

As per the proper methods and techniques of maintaining a good lawn, you should not fertilize and be overseed at the same time. Fertilizing the lawn and adding seeds at the same time results in uneven distribution of seeds and the fertilizer. As a result, the seedlings burn due to the presence of excessive fertilizer and it also results in patchy areas on the lawn. The best advice is to spread the fertilizer just before the seeds.

Can you fertilize after overseeding? 

how soon can you seed after fertilizing

Can i overseed after fertilizing? You are supposed to fertilize your lawn six weeks after you sow the seed. Applying fertilizer at the right time helps in providing the soil will all the necessary nutrients for the required growth of your lawn grass.

Can you fertilize before overseeding? 

It is advised that you do not add fertilizers to the soil for at least 4 weeks before overseeding. This is for the reason that adding fertilizers results in excessive growth of the grass which hinders the growth process of the seeds. It then becomes difficult for the seeds to take hold of the soil.

Can you overseed and fertilize at same time in the fall or spring? 

Can i overseed and fertilize at the same time? Overseeing the soil during fall and spring is the best time for the seeds to grow and flourish properly, but you should not add fertilizers along with the seeds. This would impact the soil in a bad way. Overseeding and fertilizing at the same time in the fall or spring cause uneven distribution and it leaves patches in the soil, thereby restricting the growth of the seeds.

What do you put down first, grass seed or fertilizer?

Fertilizer should be put down first on the lawn and then the grass seeds should be planted immediately after applying the fertilizers. This is the correct order to plant the seeds for proper and balanced growth and development.

How soon can you seed after fertilizing?

You can immediately implant the grass seed after fertilizing. However, the best time to seed after fertilizing is four weeks after you put the fertilizers into the soil. It helps the soil to flourish itself and as a result, the seeds grow well and they also get the required nutrients from the soil.

How can you overseed and fertilize the lawn in fall & spring?

Overseeding and fertilizing the lawn in fall and spring require the right technique, proper care, and patience until the seeds grow and further develop into plants. It can be done as follows-

•Cut the old grass

Primarily, you are required to cut the old grass before you try to add new seeds to the soil. The presence of old grass makes it difficult for the seeds to hold onto the soil and due to this reason, the seeds will not germinate or grow.

•Identify and solve the existing problem

If the soil of your lawn is losing its fertility and you are facing the problem of the growth of the grass seeds, it is advised that you feed your lawn with some nitrogenous and organic fertilizers to retain the fertility of the soil because only then it is possible for the grass seeds to grow further.

•Maintain the waiting period

The overall growth and development process should be done as per the proper time gaps. The fertilizer should be added four weeks before overseeding and six weeks after overseeding. A constant supply of water should be provided to the lawn and you should ensure to maintain the aeration of the soil.

Should You Fertilize Before, During, Or After Overseeding?

You can fertilize the lawn four weeks before you add seeds to the soil. Within the period of four weeks, the soil replenishes its fertility and the necessary nutrients get back to the soil. Make sure that excessive grass does not grow during this period else the seeds will not generate properly. 

During overseeding, fertilizing should be avoided and not be done because it results in an uneven distribution of seeds and fertilizers. There can be patches on the land and the fertilizers can also burn the seedlings at times.

Once the overseeding is done, the fertilizers should be added to the soil after six weeks. It helps in providing nutrients to the soil during the time of growth of the sapling and the saplings do not burn or get damaged.

How often to fertilize after overseeding?

You can add a nitrogen-based fertilizer or an organic fertilizer to the soil after four to six weeks once the overseeding process is done. Regular addition of fertilizers should be done four times a year to maintain the fertility of the soil. Excessive fertilizers should not be added else the soil will become useless for growth.

How long to wait to fertilize after overseeding? 

How long should i wait to overseed after fertilizing? After overseeding, the first fertilizing process should be done after four to six weeks. It is the ideal time to add fertilizer to the seeds because it is the initial growth stage and the seeds need nutrients at this time. The nutrients are provided by the fertilizers.

Do you have to aerate before overseeding? 

No seed can be grown if the soil does not hold the right amount of nutrients, water, and the gap for the exchange of air. Aeration is a vital step before overseeding. In the absence of air, the seeds will not grow at all. Therefore, it is crucial to aerate the soil should you fertilize before overseeding so that there occurs a pathway for the exchange of gases.

What fertilizer to use with overseeding? 

The fertilizer that should be used with overseeding should be rich in nitrogenous compounds. It adds the required nutrients to the soil. If possible, go for organic fertilizer. Also, try magnalite fertilizer and NPK compounds.


1) Does overseeding hurt weeds?

1) If the overseeding process is done with care and a proper time gap is maintained, then the result that you are going to get is a thick lawn. A thick lawn would choke out the already present weeds. Moreover, it will leave no space for new weeds to grow.

2) How To Fertilize While Seeding?

2) While seeding, you should fertilize the soil with a dilute and organic fertilizer so that the seeds or the saplings do not burn. Also, make sure to not add too much fertilizer else the natural fertility of the soil will be reduced and the seeds might not flourish thereafter.


Overseeding and fertilizing should not be done at the same time. It leaves patches and harms the soil which in turn results in damaging the growth of the seeds. Proper and timely care of your lawn should be done so that the seeds flourish well. Water should be given to the seeds at regular intervals and required aeration should also be maintained.

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