How to Use a Hydroseeder - Finn Corporation (2024)

Learning how to use a hydroseeder properly is important to efficiently and effectively apply seed over large areas like lawns, sports fields, and highway corridors. Considering its many benefits — like saving time and money — compared to other methods for seeding, it’s no wonder learning how to hydroseed and DIY hydroseeding is gaining popularity among landscapers, homeowners, and contractors of all kinds.

While generally done by industry professionals, it is possible to learn how to hydroseed yourself if you’ve got the time and willingness to learn.

Learning how to use a hydroseeder properly includes five key steps to consider:

  1. Finding hydroseeding equipment and materials
  2. Preparing the ground
  3. Properly mixing the right seed and materials
  4. Using the hydroseeder itself
  5. Caring for and maintaining ground after the process is complete to ensure good results

Understanding these steps can help you decide whether or not you can, or should, pursue do it yourself hydroseeding. We’ll go through what’s involved in each of these steps to help you make the right choice for your project and your needs.

Step 1: Find the Right Hydroseeder for your Project

Many equipment rental companies rent hydroseeders by the day or the hour. Chances are, you can also find a Finn HydroSeeder dealer in your area. It’s important to know the details of your hydroseeding project before you check with a rental outlet, since they may or may not be able to help you find the right machinery based on the size of your project. Learn more about how to choose the right hydroseeder for your project, and make sure you’ve done your measurements so you know what you’re looking for.

It’s also worth doing a little research on the kind of seed, or mix of seed, that will work for your area and your project. While suppliers can generally provide a little direction with this, it will help to get the results you’re looking for.

Step 2: How to Prep for Hydroseeding

Once you’ve located the right hydroseeder and determined where you’ll buy your materials, the next step toward learning how to use a hydroseeder is properly preparing the ground. This is one of the most important steps because it’s ultimately responsible for how well your lawn takes root.

It’s crucial, to achieve the best results for a lawn, that the ground be:

  • Level or smooth
  • Loose, not hard or compacted
  • Free of debris like rocks, sticks, and weeds
  • Raked if possible to provide the best environment for seeds to establish

Again, don’t rush this portion of the hydroseeding process as it quite literally lays the foundation for your project. If you are seeding a field for erosion control, these steps are not as critical. Everything else can be spot on, but if the ground isn’t ready, the end result will suffer.

Step 3: How to Make Hydroseed Mixture

Once you’ve made sure the ground is prepared, and you know how much material you’ll need to prepare your hydroseeding mixture, you can mix. The best hydroseed mixture, or slurry, should include six main components:

  • Seeds themselves
  • Water
  • Mulch
  • Tackifiers
  • Fertilizer
  • Dye (optional)

Additionally, you can choose to include things like herbicides or biostimulants as needed. Mixing the hydroseed is crucial to the success of your project because you’ll need the right combination of materials to provide the best results for your lawn. Most products will come with instructions on mixing them, but it’s always a good idea to ask where you’re purchasing — this will help you not only get the right materials, but give you an idea as to the proper proportions for mixing so you won’t have to come back to restock mid way through mixing.


To mix the seed, if you have a paddle agitator like the Finn T60 HydroSeeder®, turn the machine on and let it warm up. It’s a good idea to flush the hoses before you begin mixing, so fill the tank with water to 50 gallons or so and flush the system. Once the water level has reached the agitator line, then set the paddles to reverse at a slower speed, like 15%, and begin to add the materials. While the order you add materials doesn’t necessarily matter, using this method can help with consistent seed dispersal — a good rule of thumb is to add the seed first, followed by mulch and then fertilizer, if you’re using them. Tackifiers or bonding agents should come last, if you’re planning on using them. You’re looking for the mixture to be uniform — without large clumps or chunks. Once the materials are added, plan on mixing your slurry at least five minutes to achieve the right consistency. You can increase the paddle speed at this point to help with the mixing consistency.

Step 4: DIY Hydroseeding

Once your slurry is thoroughly mixed, you’re ready to start the application. While each hydroseeder will have specific operating instructions, there are some general tips to learn how to use a hydroseeder effectively:

Make sure to turn down the agitator before you begin spraying — you want the slurry moving while you apply — but not moving too fast. So after you’ve mixed the slurry, turn it down so you can see it slowly mixing but not so fast that it’s sloshing out of the tank. A good speed is about 50%, or slightly less.

You can generally choose to apply from the tower or from the hose, and when doing this you want to make sure that your valves are all properly positioned. If the tower valve is engaged while you’re spraying from the hose, or vice versa, you’ll end up with a mess.

Once you’ve decided how you’ll spray — larger areas are often easier to spray from the tower, while smaller, more nuanced ground makes a great target for hose application — you can begin the process.

This is where the dye comes in very handy, as it helps you see exactly where you’ve applied seed so you can cover ground more evenly and consistently. Cover the ground as evenly as possible, laying down a thin layer of hydromulch. For more control and precision, use lower RPMs while spraying, higher RPMs can help you cover more ground, more quickly.

Step 5: Caring for Hydroseed

After you’ve covered your area with hydromulch, you’ll want to allow about a day for it to dry before you begin watering. Newly-hydroseeded ground requires a lot of water, especially initially, to help seeds germinate and take root well.

Expect to water 2-3 times per day for the first week or two. After that, continue watering daily to ensure enough moisture for optimal growth. The specific type of seed you use may come with instructions on watering, so be sure to read over the instructions for your particular product.


Learning how to use a hydroseeder can seem like a daunting process at first, but with the right research and the right resources at your disposal, you can accomplish do it yourself hydroseeding successfully. Learn more from the experts on our YouTube Channel or call a local dealer for more information.

How to Use a Hydroseeder - Finn Corporation (2024)

FAQs

How to Use a Hydroseeder - Finn Corporation? ›

Once the water level has reached below the agitator shaft, reverse the position of the agitator BEFORE loading any materials. Load materials in the correct order, generally seed first, and according to the product's specifications for the best hydroseeding results. After seed, add mulch, followed by fertilizer.

What is the best time of day to water hydroseed? ›

The ideal times are 4:00AM, 11:00AM, and 4:00PM. (Do not water after dark) You may adjust the watering slightly for seasonal changes at your discretion, i.e. increase for the hot summer months or decrease for the cooler fall months. The hydroseed needs to remain moist in order to germinate properly.

How long does it take hydroseed to turn into grass? ›

Depending on the climate, watering, and seed mixture, hydroseed lawns typically begin to sprout within 5-7 days. If you continue with proper maintenance (starter fertilizer applied 3 times every 3-4 weeks) and don't experience any extreme weather conditions, your lawn will reach 3 inches long within a month.

Do you need to put straw over hydroseed? ›

Straw, mulch, or tight-weave matting may be applied over the hydroseeded application. Open-weave matting such as jute may be applied before the hydroseed application. Step 2: Apply Matting. We suggest using an open-weave jute or coir matting, preferably with ½ - 1 inch open spaces.

Can you hydroseed over dead grass? ›

Target Patchy or Dead Grass Areas

When applying hydroseed as an overseeding method, plan to target spray the areas most in need of help. While it's possible and okay to spray existing grass, it's still wise to minimize as much of the overlap as possible.

Do you need top soil with hydroseed? ›

Hydroseeding is a popular method for establishing new lawns, erosion control, and reseeding bare patches. While topsoil can enhance the success of hydroseeding, it may not always be necessary. If your existing soil is nutrient-rich, well-draining, and adequately prepared, you may not need additional topsoil.

Will rain wash away hydroseed? ›

In general, if the soil has been properly prepared and is not compact, hydroseed will not wash away after application. If, on the other hand, soil has not been de-compacted or prepared, there is a potential for heavy rains to partially wash away seeds if the rain occurs directly after hydroseeding has been completed.

Will hydroseed grow on hard ground? ›

Yes, it will grow anywhere; even on a rock, but without having a surface to root into, it will not thrive or last. It's not a "magic" seed. It needs water, fertilizer, sun, and proper care forever to germinate properly and become a healthy beautiful lawn.

What are the disadvantages of hydroseeding? ›

Dry or arid conditions: Hydroseeding typically requires a lot of moisture to establish well, so if the soil is too dry, seeds may have difficulty germinating, germinate sporadically, or die entirely — leading to patchy, inconsistent results.

Is it OK to walk on hydroseed? ›

Can I walk on the hydroseed once it is applied? Only as much as is absolutely necessary. Heavy traffic on a newly seeded lawn can permanently damage the new grass. Walking on a freshly hydroseeded lawn can leave depressions in the lawn and in some cases cause bare spots to form.

Can you overwater hydroseed? ›

Be careful not to over water during these periods. This can also cause seed damage. The easiest way to explain it is... Keep your mulch wet; don't let it dry out for periods longer than 24 hours!

How do you prepare the ground for hydroseeding? ›

Till the Area: Remove any existing grass, weeds, rocks, or debris from the area where you plan to have hydroseeded. You can use a shovel, rake, or a sod cutter for larger areas. You do not want to go any deeper than 4”-6”.

Can you hydroseed on top of grass? ›

It's also cost-effective compared to starting a lawn from scratch. However, the drawbacks are significant. Hydroseeding over an existing grass can harm the established grass, leading to browning or death. The process requires expertise, as doing it incorrectly can result in disappointing outcomes.

When can you stop watering hydroseed? ›

A newly-seeded lawn will need to be irrigated two to four times daily depending on the weather. Water frequently enough to keep the top 0.5 to 1.0 inch moist, but avoid over-watering and saturating the area. Once the seedlings are two inches high, gradually reduce the frequency of irrigation and water more deeply.

Is hydroseed better than grass seed? ›

Hydroseeding, while a little more costly, can provide more consistent, reliable results than conventional hand seeding. Because seeds are pre-mixed with mulch, fertilizers, and tackifiers, seed can be quickly applied to an area with even coverage.

What fertilizer to use with hydroseeder? ›

'Starter' fertilizers are the best choice for newly hydroseeded lawns because they contain high amounts of nitrogen, and often phosphorus, which are key to helping your grass grow lush and green.

How to make your own hydroseed mix? ›

“If more beneficial products are mixed with the seed then the seed germinates faster.” Jerszyk's hydroseeding recipe is basic: four bales of paper fiber, 30 pounds of seed and 25 pounds of fertilizer to every 500 gallons of water, seed being the most expensive part – approximately $2 per pound.

What prep is needed for hydroseeding? ›

Remove any existing grass, weeds, rocks, or debris from the area where you plan to have hydroseeded. You can use a shovel, rake, or a sod cutter for larger areas. You do not want to go any deeper than 4”-6”.

What is the ratio for Hydroseeder? ›

Typical Ratios for Hydroseed Mixtures

For an average hydroseeding job in an average environment, and assuming a typical 335 gallon hydroseed tank, the proportions of mulch, fertilizer, seeds, and water are: Seed: 20 lbs. Fertilizer: 25 lbs. Mulch: 120 lbs.

Top Articles
Latest Posts
Article information

Author: Patricia Veum II

Last Updated:

Views: 5950

Rating: 4.3 / 5 (64 voted)

Reviews: 95% of readers found this page helpful

Author information

Name: Patricia Veum II

Birthday: 1994-12-16

Address: 2064 Little Summit, Goldieton, MS 97651-0862

Phone: +6873952696715

Job: Principal Officer

Hobby: Rafting, Cabaret, Candle making, Jigsaw puzzles, Inline skating, Magic, Graffiti

Introduction: My name is Patricia Veum II, I am a vast, combative, smiling, famous, inexpensive, zealous, sparkling person who loves writing and wants to share my knowledge and understanding with you.