Can You Hydroseed Over Existing Lawn?

Are you tired of having a patchy and unsightly lawn? Hydroseeding is a popular solution for homeowners who want a lush and green lawn without the hassle of traditional seeding methods. But can you hydroseed over an existing lawn? In this article, we’ll explore the ins and outs of hydroseeding and whether it’s possible to use this method on an already established lawn.

What is Hydroseeding?

Hydroseeding is a planting process that involves mixing grass seed, fertilizer, and mulch with water to create a slurry. This mixture is then sprayed onto the soil using a high-pressure hose, resulting in a dense and uniform layer of grass. Hydroseeding is a cost-effective and efficient way to plant grass, making it a popular choice for both residential and commercial properties.

Screenshot 21 Can You Hydroseed Over Existing Lawn?Can You Hydroseed Over Existing Lawn?

The short answer is yes, you can hydroseed over an existing lawn. However, there are some factors to consider before deciding whether this method is right for your lawn.

Lawn Condition

The condition of your existing lawn is a crucial factor in determining whether hydroseeding is a viable option. If your lawn is thin, patchy, or has bare spots, hydroseeding can be an effective way to fill in these areas and create a more uniform look. However, if your lawn is heavily compacted, has a lot of thatch, or is in overall poor condition, it may be best to remove the existing grass and start fresh.

Grass Type

Another factor to consider is the type of grass you want to plant. Some grass species, such as Bermuda grass, can be difficult to establish from seed and may require specialized equipment or techniques. If you’re unsure whether hydroseeding is appropriate for your chosen grass type, consult with a professional landscaper or turf expert.

Soil Preparation

Proper soil preparation is essential for successful hydroseeding, regardless of whether you’re starting from scratch or planting over an existing lawn. This includes testing your soil for nutrient deficiencies, adjusting the pH if necessary, and ensuring that the soil is adequately aerated and free of debris.

Hydroseeding Process

The hydroseeding process itself is relatively straightforward. The mixture of grass seed, fertilizer, and mulch is sprayed evenly over the existing lawn using a high-pressure hose. The seed will germinate and grow through the existing grass, eventually choking it out and creating a new, uniform lawn.

Benefits of Hydroseeding Over Existing Lawn

Hydroseeding over an existing lawn offers several benefits over traditional seeding methods:

  • Cost-effective: Hydroseeding is typically more cost-effective than traditional seeding methods since it requires less labor and equipment.
  • Faster results: With hydroseeding, you can expect to see grass growth within a week or two, as opposed to several weeks or months with traditional seeding.
  • Better coverage: Hydroseeding ensures even coverage of grass seed and fertilizer, resulting in a more uniform and dense lawn.

Screenshot 22 Can You Hydroseed Over Existing Lawn?


In conclusion, hydroseeding over an existing lawn is possible and can be an effective way to fill in thin or patchy areas. However, it’s important to consider the condition of your lawn, the type of grass you want to plant, and proper soil preparation before deciding whether this method is right for you. With proper planning and execution, hydroseeding can result in a lush and healthy lawn that will be the envy of your neighborhood.

Table 1 – Pros and Cons of hydroseeding over an existing lawn

Pros Cons
Cost-effective Requires proper soil preparation
Faster results Grass type may impact success rate
Better coverage Condition of existing lawn may impact success rate
Can fill in thin or patchy areas Existing grass may need to be removed for optimal results
Can be used for both residential and commercial properties


  1. How long does it take for hydroseed to germinate?
  • Hydroseed typically germinates within 7-10 days, depending on weather conditions and grass type.
  1. Is hydroseeding better than sodding?
  • Both hydroseeding and sodding have their advantages and disadvantages. Hydroseeding is typically more cost-effective and can cover larger areas, while sodding offers instant results and requires less maintenance in the short-term.
  1. Can I walk on the hydroseeded lawn?
  • It’s best to avoid walking on the hydroseeded lawn until the grass has fully established, which can take several weeks.
  1. How often should I water my hydroseeded lawn?
  • It’s important to keep the soil moist for the first few weeks after hydroseeding, typically by watering twice a day for 10-15 minutes. After that, you can gradually reduce watering to once a day, then once every few days as the grass matures.
  1. What kind of maintenance does a hydroseeded lawn require?
  • A hydroseeded lawn requires regular watering, fertilization, and mowing, just like any other lawn. It’s important to follow a proper maintenance schedule to ensure healthy growth and prevent issues like thatch buildup or weed infestations.
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