Protect Grass Seed From Heavy Rain

How To Protect Grass Seed From Heavy Rain?

Rain is undoubtedly a blessing for plants. It helps them grow, keeps them evergreen. But this blessing can turn into a curse within a second. How? Heavy rain after planting seeds can hinder their growth and, sometimes even worse, can wash them away. Are you worried about your newly seeded lawn? Are you thinking about how to protect grass seed from heavy rain? Well, in today’s article, we are going to talk about that. Hopefully, the guidelines and tips will come in handy to save your lawn. 

Is Rain Beneficial For New Grass Seeds?

New Grass Seeds

New grass seeds require sufficient water for complete germination. That’s why a newly planted lawn needs to be kept moist all the time. 

When it rains, the soil gets more than enough supply of water. It promotes the growth of grass seeds and allows them to sprout healthily. But heavy rain after planting grass seed does more damage than any good.

Heavy rain slows down the germination process hindering the growth. They make the soil compact, blocking air and water passage. Also, it leaves only a little room for grassroots to develop. Flood followed by heavy rain can also wash away the seeds.

How To Protect New Grass Seed From Heavy Rain?

Damages that can be caused by heavy rainfall have made the gardeners wonder how to protect seeds from rain. Well, we have some practical tips for you. Aren’t you curious to know about them?

Planting In Proper Time

Many people prefer planting grass seed before the rain. It’s because working on dry soil before rain is easier. Ground after rain becomes more compact and sticky. That’s not preferable for the healthy growth of seeds

But as heavy rain may cause damage to the seeds, it is better to plant them at the end of summer or the starting of spring. In those times, the chances of heavy rain are relatively low.

Lawn Aeration

If the land is left barren for a long time, the soil becomes compact. They barely have any air or water passageway. Also, seeds can’t go deeper into the soil if it’s packed. So, heavy rain can easily wash them away.

Before sowing seeds, aerate the land by making at least 3 inches of small deep holes. It will loosen the soil and will keep the seeds in place during rain. 

Soil Composition

Soil Composition

Checking soil composition before planting seeds is essential. If the soil has too much sand, it can’t hold onto the seeds firmly. On the other hand, if the soil has a large portion of clay, it will become too sticky, blocking water passage. 

Improved Drainage

If the drainage system of your lawn is not good, even a little rain will cause flooding. It will block the seed’s way of germination and can wash them away with streams. 

So, for an evergreen lawn, one must establish improved drainage in his lawn. 

Grass Seed Protector

The best way to protect the grass seed from the heavy rain is by using protection layers on top of them. Here are some common and popular grass seed protectors you can rely on. 


Mulch is composed of various organic elements like grass clippings, hay, leaves, woods, etc. They are biodegradable, full of nutrients, cheap, and most importantly, create a protective layer on top of seedbeds. Spread a layer of mulch on top of the soil after sowing seeds. 


It is another biodegradable and nutritious protective layer for seeds. They are available in the market, sometimes in the form of erosion blankets. Spread them in the same way as mulch, and it will protect the seeds for 45 days. After that, it will degrade. 


Nowadays, different types of fabric rolls are used for seed protection. They keep seeds protected from rain and also keeps the soil moist. 

You need to spread landscape fabrics over grass seed and hold them in place by using tent spikes. 


Tarps are clear plastic wraps used for holding the moisture of soil and protecting grass seeds from rain. Spread a tarp over new grass seeds and keep them tacked in the corner using spikes. But the traps should be removed once in a while, especially when the grass starts sprouting. 


Will Heavy Rain Ruin Grass Seed?

Heavy rain can loosen the soil layer causing the grass seeds to wash away. It can also interrupt the growth of seeds and uproot them. 

Should You Plant Grass Seed Before Heavy Rain?

Little rain helps grass seeds to grow by supplying adequate water to the soil. But heavy rain can cause damage. So it is not wise to plant grass seeds before heavy rain. But if you decide to plant it anyways, better use a grass seed protector. 

How Do I Protect My Grass Seed From Washing Away?

Use a layer of mulch or straw on top of seedlings to add a protective coating. You can also use tarps or fabrics to prevent seeds from washing away and keep them in place.

Should You Cover Grass Seed With A Tarp?

You can undoubtedly cover grass seeds with a tarp. It gives them protection against heavy rainfall and helps them thrive.

Final Verdict

How to protect grass seed from heavy rain? It is one of the major concerns for house owners trying to decorate their lawn with greenery. After all, all your hard work can go in vain if the grass seeds are washed away in the rain. 

Hopefully, the methods we have discussed in this article will be helpful for you. We wish you to have a nice lawn with healthy grass. 

Jonathan L. Leon
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