How to Protect New Grass Seed from Heavy Rain? (Solutions)

Heavy rain means a high volume of precipitation per unit of time. Light precipitation for long period is not heavy rain. It is a natural process. Heavy rain washes away dirt from lands, rooftops, and plants. Heavy rain also cleans the air by settling down dust and toxic gases. After a season of drought or high temperature, we may wish for a rainy day. It is also good for plants.

Plant seeds including grasses need moisture to germinate. Heavy rain after a drought condition will be helpful to prepare land for growing grasses. But you may be worried about heavy rain after you have placed seeds on your lawn. Right? Protecting newly-seeded lawns from rain is possible.

Is heavy rain bad for grass seed?

Heavy rainfall can damage lawn grass seed in the following ways-

  1. A heavy shower may wash out grass seed from your lawn. This can result in patchy growth, uneven lawns, and a waste of time and resources.
  2. Seeds may decay by rainwater if the drainage system of your lawn is not up to the mark.
  3. Flooding from heavy rain may stop grass seeds from germinating.
  4. Heavy rainfall can delay the germination of the grass seed. This can lead to a less uniform lawn with uneven growth patterns and patches.
  5. Waterlogged soil deprives the grass seed of the oxygen it needs to grow properly. This can lead to stunted growth, weak root systems, and even death of the seedlings.
  6. Heavy rainwater may bring pathogens that may damage the seed
  7. Seed-borne pathogens may spread throughout the lawn by the water of the heavy shower.
  8. Heavy rain can damage the young and delicate seedlings, making them more susceptible to diseases and pests. This can lead to weaker growth and even death of the seedlings.
  9. Flooding from heavy rainwater may bring unwanted seeds (such as seeds of crabgrass, nutsedge, etc.) and you will lose confidence in the purity of your purchased grass seed.

Protecting grass seed from heavy rain

Any plant seed (including grass seed) needs some moisture for germination. Rainwater is the best source of water for seed germination. But you have to protect grass seed from heavy rain on your lawn.

heavy rain water

To protect grass seed from heavy rain-

  1. Know about the grass seed. Knowing the required time for your seeds to germinate is very important.
  2. Know about the required temperature, day length, and humidity required for your grass seed to germinate. Placing grass seed in the wrong season will prolong the time for seed germination and the chance of getting heavy rain before grass establishment will be increased.
  3. Buy good quality seed. Quality grass seed will germinate in the recommended time frame. It will help you to avoid heavy rain exposure.
  4. Choose grass seed that are suitable for your region and climate. Some grass species are better adapted to wetter conditions than others, so choose accordingly.
  5. See the weather forecasting of your location and be confirmed that there is almost no chance of heavy rain within the time of seed germination and establishment of grass on a lawn.
  6. Prepare your lawn surface with care. Be sure that the lawn surface is not uneven.
  7. Before seeding, ensure the soil is properly prepared to absorb and retain water more efficiently.
  8. Improve the drainage system of your lawn so that the rainwater can be drained out easily.
  9. Ensure a proper combination of sand, silt, and clay in your lawn soil to protect your seeds from excessive moisture.
  10. Try to make your lawn higher than the surrounding area for protecting the newly-seeded lawn from rain.
  11. Use the proper seeding techniques to ensure the seeds are evenly distributed and properly covered.
  12. You can use mulching to protect the grass seeds from washing out by heavy rain from your newly-seeded lawn.
  13. Using compost on a newly seeded lawn is a good option to protect grass seed from storms and heavy showers.
  14. You can also use jute fabric which is very good for protecting grass seeds. This is totally natural product that will not increase the ground temperature and will allow having healthy grass on your lawn.
  15. Dry rice or wheat plant can be used also. Use the straws on the ground. They will protect grass seeds from heavy rain.

Post-seeding maintenance

  1. Maintaining a proper watering schedule protects grass seed from heavy rainfall.
  2. Overwatering can lead to waterlogging, while underwatering can result in poor growth and weak roots.
  3. Fertilizing the lawn can also help to strengthen the grass and improve its resistance to heavy rainfall.

Can heavy rain be good for grass?

Heavy rain may come as a blessing for your lawn after a hot dry season. Faded-out grass will get greener after a heavy shower. So, your lawn grass needs rainwater. The benefits of rain for your lawn are-

  1. Like all other plants, grasses need water to survive. You have to water your lawn to keep moisture in the soil. But in extremely hot weather without rain, irrigation water may not be enough for grasses to survive. Heavy rain may give back moisture to soil and makes grass greener.
  2. Water from hoses or sprinklers or drip emitters will not make your lawn grasses as green and healthy as rainwater.
  3. Nutrients of the soil become available to be uptaken by grasses in presence of water.
  4. Iron, manganese, zinc, and copper become available after getting acidic water of rain. These Micronutrients are essential for plant growth.
  5. In drought stress, some insects may cause damage to your lawn grass. Heavy rain will make the grass stronger.
  6. Grasses become more susceptible to the pathogen in drought stress. Continuous light precipitation is also advantageous for pathogens to attack grasses. Lawn grass can be cured naturally by heavy rain.

Some grasses are propagated by seeds, some are by runners or stolons. Some grasses (such as Bermuda grass)  may have multiple options for propagation. You can buy grass sod for your lawn too. Rain is a natural blessing for grass. But when you sow seed on your lawn, heavy rain may cause some damage.

Some protective measures can reduce the loss of grass seeds. Heavy rain may harm newly placed grass seed on your lawn. You have to protect your grass seed from excessive water on the lawn from rain.

The grass is a must-have component for our lawn. Grasses are everywhere- in fields, in a pasture, in the garden, in crop fields, on roadsides or roads, in forests, in dryland, in wetland, and even underwater (aquatic grasses). Sometimes we do not like grasses in our crop fields, gardens, or lawns and consider them a weed. But you certainly need grass for your lawn. A greener, thicker grass covering is hoped for by every lawn owner.

Rain is the best source of water for our lawn. If we properly manage our lawn rain will be a blessing for our lawn. Protect your newly-seeded lawn from heavy rain. After grass establishment rain may protect your grass on the lawn.

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A B M Zahidul Hoque

I'm the owner of After completing my bachelor of science in agriculture, I have joined as a scientist at Bangladesh Jute Research Institute (BJRI) under the Ministry of Agriculture, Bangladesh. I started Weeds in Gardens to make you familiar with different weeds and their positive and negative aspects.

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