How Does an Overseeder Work? What You Need to Know

Overseeding is an essential process for maintaining the health and appearance of turf. Whether you operate a turf service company or are leading an in-house grounds team, it’s important to have a deep understanding of the overseeding process and the equipment required to achieve the results you expect from your maintenance efforts. 

If you’re looking to invest in an overseeder, this guide is for you. Today, we’ll cover everything you need to know about an overseeder and how it works so that you can plan to use one with confidence. 

What is an Overseeder?

Simply put, an overseeder is a specialized piece of equipment designed to distribute grass seed evenly over an existing lawn. It’s composed of several key components, including a seed hopper, a series of vertically rotating discs or blades, and seed delivery tubes. 

There are different types of overseeders available in the market, ranging from small walk-behind models to larger tractor-mounted units. Each is designed to meet various business needs and client requirements.

Overseeding is vital for your turf service business for several reasons:

  1. Enhancing turf health and appearance: Regular overseeding promotes thicker, more vibrant lawns, which can drastically improve the overall look of a property.
  2. Filling in thin or bare spots: Overseeding can help repair lawns that have suffered from heavy foot traffic, pests, or disease.
  3. Improving drought and disease resistance: Introducing new grass varieties can bolster the lawn’s resilience to environmental stressors.
  4. Increasing customer satisfaction and retention: Clients who see visible improvements in their lawns are more likely to recommend your services to others and remain loyal customers.

How Does an Overseeder Work?

To achieve the best results, it’s crucial to understand the overseeding process:

Prepping the area

Before using an overseeder, you’ll need to mow the lawn to a shorter height than usual and remove any debris or thatch. This ensures that the grass seed can make direct contact with the soil and for successful germination to take place.

Calibration

Select the appropriate seed type, rate, and depth for the lawn. This can depend on factors such as climate, soil conditions, and the specific grass species desired. Consult the overseeder’s manual for guidance on calibration settings.

Seeding process

The overseeding process is a meticulous yet highly effective method of achieving optimal seed-to-soil contact for better germination rates. To provide a more in-depth understanding of the process, let’s break it down into several key steps:

Adjusting the depth of the blades: The overseeder’s blades, also known as slicers or vertical cutting discs, are designed to create grooves in the soil at a specific depth. The depth setting is adjustable and should be set according to the type of grass seed being used and the soil conditions. Generally, grooves should be about 1/4 to 1/2 inch deep to promote proper seed-to-soil contact without burying the seeds too deep.

Blade spacing: The spacing between the blades is another important factor to consider. Wider spacing results in fewer grooves per square foot, which may be suitable for lawns that require minimal overseeding.

Conversely, narrower blade spacing creates more grooves, which is beneficial for heavily damaged or sparse lawns that need more extensive overseeding. Blade spacing is often adjustable on overseeders, allowing you to customize the process for each lawn.

Seed distribution: As the overseeder moves across the lawn, the seed hopper dispenses seeds through a series of seed delivery tubes. These tubes are strategically positioned above the blades, making certain that seeds are dropped directly into the grooves created in the soil. This precise seed placement maximizes seed-to-soil contact, providing the seeds with an ideal environment for germination.

Seed rate: The overseeder is designed to distribute seeds at a specific rate, which is usually measured in pounds per 1,000 square feet. This rate can be adjusted according to the type of grass seed and the desired density of the new grass. The overseeder’s manual will provide guidance on appropriate seed rates for various grass species and lawn conditions.

Soil coverage: As the overseeder moves forward, the grooves filled with seeds are gently pressed by the machine’s rear roller or tires. This light pressure helps to cover the seeds with a thin layer of soil, protecting them from drying out, being eaten by birds, or being blown away by the wind. It also fosters the seeds’ good contact with the soil, further promoting successful germination.

Post-seeding care

Once the overseeding process is complete, you’ll need to water the lawn regularly and apply fertilizer as needed. Monitor the lawn’s progress, ensuring that the new grass establishes itself properly.

Selecting the Perfect Overseeder for Your Business

When choosing an overseeder, consider the following factors:

  • Assessing your business needs: Evaluate the size and scope of the properties you service, as well as the specific requirements of your clients. This will help you determine the type of overseeder that best suits your business.
  • Comparing features and capabilities: Research different overseeder models and brands, taking note of their features, capabilities, and limitations. Consider factors like seed hopper capacity, cutting depth, and maneuverability.
  • Evaluating cost-effectiveness and ROI: While it’s tempting to opt for the most affordable option, it’s important to consider the long-term value of the equipment. A high-quality overseeder may have a higher upfront cost but can save your business money through increased efficiency and reduced maintenance expenses.
  • Considering ease of use: A user-friendly overseeder with accessible maintenance components and reliable customer support will save time and effort for your team. When evaluating overseeders, inquire about the availability of replacement parts,
  • Seed selection: Select the appropriate grass species for your clients based on their preferences, location, and lawn requirements. Familiarize yourself with the characteristics and growth patterns of various gr maintenance tutorials, and responsive support from the manufacturer.

Best Practices for Using an Overseeder

To make the most of your overseeder and optimize the overseeding process, keep these best practices in mind:

Timing

Choosing the right time for overseeding is crucial. The optimal season varies depending on the grass species and the local climate. Generally, cool-season grasses should be overseeded during the late summer or early fall, whereas warm-season grasses are best overseeded in late spring or early summer.

Maintenance and storage

Proper care of your overseeder is essential for its longevity and performance. Regularly inspect and clean the equipment, paying particular attention to the blades and seed delivery tubes. Store it in a dry, protected area when not in use.

Training your team

Investing in training for your team members will enhance their efficiency and safety when using the overseeder. Provide hands-on demonstrations and educational resources to ensure they have a thorough understanding of the equipment’s operation and maintenance.

Upgrade Your Overseeding Capabilities with 1st Products

At 1st Products, we supply turf management professionals with a reliable and innovative suite of equipment to best plant, maintain, and care for their grass. To learn more about discovering the perfect solution for your operations, view our turf solutions or contact us anytime. 

10ft MULTI-drill | ND-120

STARTING AT $24,340.28

Drill Type: No-till/Conventional
Meter System: Slide Plate control
Overall Width: 140 in.
Working Width: 126 in.
Dry Weight, (No Aux Box): 4800 lbs
Hitch Type: Cat. II, Cat III 3 point lift (standard) or tow (tow kit optional)
N# of Openers: 14
Spacing: 9 in
HP Required: 80+
Machine Length: 94 in
Machine Height: 64 in
Transport Height: N/A

SEED CAPACITY
Main Box: 18 BU
Aux. Box Weight: 440 lbs.
Small Box: 6.6 BU
Depth Range: 0”-3”
Weight Bracket Capacity: 1000 lbs.

5ft MULTI-drill | ND-60

COMING SOON

Drill Type: No-till/Conventional
Meter System: Slide Plate control
Overall Width: 80 in
Working Width: 54 in
Dry Weight, (No Aux Box): 1780 lbs
Hitch Type: 3 point lift
# of Openers: 6
Spacing: 9 in
HP Required: 40+
Machine Length: 59 in
Machine Height: 64 in
Transport Height: 76 in

SEED CAPACITY
Main Box: 7.7 BU
Aux. Box Weight- 220 lbs.
Small Box: 2.8 BU
Depth Range: 0”-3”
Weight Bracket Cap.: N/A

CM7000-LD

This round module spear can be adapted to loaders, tele-handlers and many other types of lifts.

  • Length- 33” (without spears)
  • 103” (with spears)
  • Width- 65”
  • Height- 56” (storage position)
  • Weight- 841 lbs.
  • Hitch: Mounting Plate Required
  • Lift System:
  • Lifting Capacity: 7000 lbs.
  • Spear:
  • 2 ¼ Round Special Alloy Steel
  • Torque Requirements:
  • ¼ UNC Standard Bolt: 11 ft. lbs. (14 N-m)
  • 5/16 UNC Standard Bolt: 21  ft lbs. (28 N-m)
  • ½ UNC Standard Bolt: 85 ft. lbs (120 N-m)

CM7000-L

This 3 pt. lift round module spear is great for staging modules in the field or at the gin.

  • Length- 33” (without spears)
  • 103” (with spears)
  • Width- 65”
  • Height- 56” (storage position)
  • Weight- 1265 lbs.
  • Hitch- CAT III, IVN, or IV
  • Lift System:
  • Lifting Capacity: 7000 lbs.
  • Module Clearance Height: 30” or Higher (depending on tractor)
  • Spear:
  • 2 ¼ Round Special Alloy Steel
  • Torque Requirements:
  • ¼ UNC Standard Bolt: 11 ft. lbs. (14 N-m)
  • 5/16 UNC Standard Bolt: 21  ft lbs. (28 N-m)
  • ½ UNC Standard Bolt: 85 ft. lbs (120 N-m)

CM7000-HL

Carry cotton high over stalks to prevent tearing and ripping.

  • Length- 58” (without Spears) 146” (with spears)
  • Width- 74”
  • Height- 58” (Storage position)
  • Weight- 2891 lbs.
  • Hitch- CAT III, IVN, or IV
  • Hydraulic Cylinder- 
  • Bore: 6”
  • Stroke: 20”
  • Max Working Pressure: 3000 psi
  • Lift System:
  • Lifting Capacity- 7000 lbs.
  • Module Clearance height: 
  • 60” Lift Links @ 39” or higher (depending on tractor)
  • Spear:
  • 2 ¼ Round Special Alloy Steel
  • Torque Requirements: 
  • ¼ UNC Standard Bolt: 11 ft. lbs. (14 N-m)
  • 5/16 UNC Standard Bolt: 21  ft lbs. (28 N-m)
  • ½ UNC Standard Bolt: 85 ft. lbs (120 N-m)

12ft MULTI-drill | ND-144

STARTING AT $25,308

  • Cover for storage
  • Rear Step and Walk Board
  • Weight Bracket
  • Aux. Seedbox
  • 4 Stainless Steel Seed
  • Plates for Various Seeds
  • Variable Speed Electric Drive
  • Conventional and No-Till Capability

8ft MULTI-drill | ND-96

STARTING AT $14,052

  • Cover for storage
  • Rear Step and Walk Board
  • Weight Bracket
  • Aux. Seedbox
  • 4 Stainless Steel Seed
  • Plates for Various Seeds
  • Variable Speed Electric Drive
  • Conventional and No-Till Capability

6ft MULTI-drill | ND-72

STARTING AT $12,699

  • Cover for storage
  • Rear Step and Walk Board
  • Weight Bracket
  • Aux. Seedbox
  • 4 Stainless Steel Seed
  • Plates for Various Seeds
  • Variable Speed Electric Drive
  • Conventional and No-Till Capability

5ft MULTI-drill | ND-60T

STARTING AT $10,602

  • Cover for storage
  • Rear Step and Walk Board
  • Aux. Seedbox
  • 4 Stainless Steel Seed plates for Various Seeds
  • Variable Speed Electric Drive
  • Self-Contained Lift
  • Conventional and No-Till Capability

AG144 AGRI-vator - 12'

Facilitates seed growth and helps you get the results you want for your farm. Break apart the soil without doing damage to the surface turf.

  • Weight 2825 lbs
  • Center Drive Gearbox 1:1.5 Tee
  • End Drive 3 Cx Belts (Left End)
  • Tine Vibration Frequency @ 540 PTO RPM = 1026 Cycles/Min
  • Side-to-Side Tine Travel 2 1/4 inches
  • Vibrating Depth 6 Inches
  • Aeration Density 5 Holes per sq. ft.
  • Tines 3/4 X 6” Forged And Hardened (144)
  • Rotor Bearings Double Sealed Tapered Roller
  • Drive Line 1 3/8” Spline w/ Safety Shield
  • Finish Black Acrylic w Grey Trim
  • Tractor HP required- 45, 60, 80

AG96 AGRI-vator - 8'

Facilitates seed growth and helps you get the results you want for your farm. Break apart the soil without doing damage to the surface turf.

  • Weight 2045 lbs
  • Center Drive Gearbox 1:1.5 Tee
  • End Drive 2 Cx Belts (Left End)
  • Tine Vibration Frequency @ 540 PTO RPM = 1026 Cycles/Min
  • Side-to-Side Tine Travel 2 1/4 inches
  • Vibrating Depth 6 Inches
  • Aeration Density 5 Holes per sq. ft.
  • Tines 3/4 X 6” Forged And Hardened (144)
  • Rotor Bearings Double Sealed Tapered Roller
  • Drive Line 1 3/8” Spline w/ Safety Shield
  • Finish Black Acrylic w Grey Trim
  • Tractor HP required- 45, 60, 80

AG72 AGRI-vator - 6'

Facilitates seed growth and helps you get the results you want for your farm. Break apart the soil without doing damage to the surface turf.

  • Weight 1630 lbs
  • Center Drive Gearbox 1:1.5 Tee
  • End Drive 3 Cx Belts (Left End)
  • Tine Vibration Frequency @ 540 PTO RPM = 1026 Cycles/Min
  • Side-to-Side Tine Travel 2 1/4 inches
  • Vibrating Depth 6 Inches
  • Aeration Density 5 Holes per sq. ft.
  • Tines 3/4 X 6” Forged And Hardened (144)
  • Rotor Bearings Double Sealed Tapered Roller
  • Drive Line 1 3/8” Spline w/ Safety Shield
  • Finish Black Acrylic w Grey Trim
  • Tractor HP required- 45, 60, 80

AE40E AERA-vator Tow Behind

If you have tight spaces that need maintaining, the AE-40E: AERA-vator is the turf aerator for you. As a tow-behind used in conjunction with small mowers or other vehicles, its versatility is unmatched.

  • WEIGHT: 577 lbs.
  • OVERALL WIDTH: 47″
  • WORKING WIDTH: 40″
  • ENGINE: 11 HP Honda w/ 6:1 Reduction
  • END DRIVE: 2- Power Rated Belts
  • TINES: 9/16″ x 3 ¾ Forged and Hardened
  • TINE VIBRATION FREQUENCY: 825 Cycles/Min @ 3600 RPM
  • OUTSIDE-TO-OUTSIDE TINE TRAVEL: 1 3/8″
  • VIBRATION DEPTH: 3 ¾” including tine Nut
  • AERATION DENSITY: 8 holes per sq/ft.
  • ROTOR BEARINGS: Double sealed tapered Roller
  • FINISH: Black & Grey Acrylic
  • VOLTAGE: 12 V
  • TONGUE DRAFT PULL: 100 lbs. (Operation)
  • WEIGHT CAPACITY: 400 lbs.

Groundmaster® 360: AERA-vator

The Groundmaster® 360 works with four of the 1st Products 60” shafts (AERA-vator 60” Shaft, Slicer 60” Shaft, Multi-tine 60” Shaft , Coring 60” Shaft) enhancing and complimenting the versatility of the GM®360. Order below or click here for more information about the Groundmaster commercial aerator.

  • Weight 479 lbs
  • Working Width60″
  • Overall width 66″
  • Center Drive Gearbox 1:3 Rt. Angle
  • End Drive (4) BX 46 Belts (left end)
  • Tine Vibration Frequency @2000 PTO RPM=800 Cycles/Min
  • Lift manual or optional Hydraulic Top Link
  • Finish Black Acrylic w/ Grey Trim
  • Power Source see specs of Toro Groundsmaster 360
  • Universal Shaft System

Universal AERA-vator 60T

The UA60T AERA-vator is a self-contained, towable 60” AERA-vator that trails easily behind any UTV or commercial grade mower. Its features are desirable for any school, municipality or sports complex. The self-contained aerator is powered by a 23hp engine and operated by a remote lanyard. The Universal Shaft System is integrated into the UA60T for added versatility.

  • Weight 1041 lbs
  • Working width 60″
  • Overall Width 94″
  • Center Drive Gearbox 1:3 Rt. Angle
  • End Drive (4) BX Belts (left end)
  • Tine Vibration Frequency @3600 Engine RPM=800 Cycles/ Min.
  • Engine Gas Honda 28 HP Horizontal Shaft
  • Finish Black Acrylic w/ Grey Trim
  • Lift Hydraulic
  • Electric 12V Electric Clutch Actuated
  • Operation Controller Tethered Handheld
  • Operation Position rear or offset
  • Transportation DOT approved for Highway use (for transport only)
  • Provided with Certificate of Origin

DO40 AERA-vator Mini Skid Steer

Our 1st Products DO-40: AERA-vator is a versatile soil aerator attachment for your mini-skid steer /compact utility loader and is the perfect tool for construction and renovation projects. The DO-40 side to side tine movement levels heavy traffic areas and prepares a great seedbed with less prep work. With the optional seeder, seed placement is broadcast on top of the rotors allowing seeding in both forward and reverse, reducing turnaround time.

  • Weight- 312 lbs.
  • Drive- Hydraulic motor
  • End Drive- 2” BX42 belys (left end)
  • Side to Side tine travel- 1 3/8”
  • Vibrating depth- 3 ¾”
  • Overall Width- 44”
  • Working width- 40”
  • Aeration density- 9 holes per sq. ft.
  • Tines- 9/16”x 3 ¾” forged and hardened
  • Rotor Bearings- Double Sealed Tapered Roller
  • Finish- Black Acrylic w/ Gray Trim
  • Minimum of 1800 PSI @ 8 GPM

VC40/VC60 Sprig Digger

The VC40 and VC60 can both be converted into a sprig digger simply by changing the VERTI-cutter shaft to the Sprig Digger shaft. Both have a 40″ working width.
 
  • Weight- 91 lbs
  • Blade- ¼” Hardox Banana Blade
  • Working width- 36”
  • Spacing- 3”
  • Rotation- forward

VC 60 VERTI-cutter

The VERTI-cutter’s patented swing-hitch allows the unit to turn during operation increasing maneuverability and the belt drive with 12” diameter blades provides a faster blade RPM (tip speed) improving quality of cut.

  • Working Width: 54”
  • Blades: 10GA Carbide Tip, 10GA Hardened Steel
  • Blade Spacing: Rollers 1.5 – 2″, Skids 2″ Only
  • Blade Depth Control: 0 – 1 7/8”
  • Blade Shaft: 1 5/8” Hex Stress Proof
  • Blade Rotation: Forward
  • Hitch: Patented 3 PT CAT.1 Trailing Hitch
  • Drive: 540 PTO Gearbox, 3 belts
  • Required HP: 20-45 Varies by Cutting Depth
  • Frame: All Welded Steel Construction
  • Weight: 900 lbs.
  • Dimensions: 70” w,46” l, 41” h
  • Gearbox: Heavy Duty 42 HP (31 KW)

VC 40 VERTI-cutter

1st Products introduces a smaller, compact version of the same quality. The VC40 offers tighter blade spacing from and ½”-2” spacing and an optional thinner blade, makes it the best VERTI-cutter for compact tractors.

  • Working Width: 35 1/2”
  • Blades: 10GA Carbide Tip, 16GA Carbide Tip, 10GA Hardened Steel
  • Blade Spacing: Rollers 1/2” – 2” (1/4” Increments)
  • Blade Depth Control: 0 – 1 7/8”
  • Blade Shaft: 1 5/8” Hex Stress Proof
  • Blade Rotation: Forward
  • Hitch: Patented 3 PT CAT.1 Trailing Hitch
  • Drive: 540 PTO Gearbox, 3 belts
  • Required HP: 20-45 Varies by Cutting Depth
  • Frame: All Welded Steel Construction
  • Weight: 800 lbs.
  • Dimensions: 51” w, 24” l, 44” h
  • Gearbox: Heavy Duty 42 HP (31 KW)

500-1750 lb Fertilizer Hopper

The new low profile box is wider and easier to fill. The variable speed ground drive allows for 75 quick-rate changes and requires NO TOOLS to adjust.

  • 2, 3, or 4 Outlets Stainless Steel Hopper and Auger
  • Mounts available for Flat, 3 1/2 – 4” Diamond, and Pittsburgh Cultivators (order kit bundles)
  • 2, 4, 6, 8, 12 row Tool bars available 
  • Removable Auger Trough for easy cleaning
  • Stainless Steel Latches
  • Ground, Hydraulic or Electric Drive
  • Variable Speed Ground drive- 60-1750 lbs/ac.
  • Hydraulic Drive- 70-1825 lbs/ac.
  • 500 lb Hopper capacity
  • Additional 500 lb and 750 lb extensions available for more capacity.
  • Stainless Steel screen 
  • Stainless Steel Bridges 
  • Box Covers
  • Flexible Hoses

Orchard Fertilizer Applicator

Designed to apply granular material to orchard rows, vineyards, and trees.

With adjustments to accommodate up to 12’ Rows, each hopper has its own variable rate electric drive that will apply 31lbs up to 2000 lbs per acre depending on row spacing. The Orchard Frame bar can be operated with 1 or 2 hoppers.

The 250lb. stainless’ hoppers capacity can be doubled to 500lbs. per hopper by adding the optional extension. The optianl stainless steel lid keeps yur material dry over night. The spouts and hoses can be adjusted for precise fertilizer placement.

  • Up to 12’ rows
  • Variable rate electric drive
  • 31-2000 lbs. per acre
  • 1 or 2 row
  • 250-500lb hopper capacity
  • Stainless Steel hopper and auger
  • Removeable trough for easy clean out
  • Optional stainless steel lid

250-500 lb Fertilizer Hopper

The Economy Fertilzer Applicator is the ideal setup for small acres such as food plots, home gardens, and vegetable growers. This all stainless steel hopper consists of 2 or 3 outlets, removeable auger trough for easy cleaning, 250 lb. capacity hopper. Add the 250 lb. extension to increase capacity to 500 lbs.

  • 2 or 3 outlet Stainless Steel Hopper and Auger
  • Removable Auger Trough for Easy Cleaning
  • Stainless Steel Latches
  • Flexible hoses for maximum elasticity 
  • Ground or Electric Drive available 
  • Ground drive- 42-600 lbs/ac (depending on row spacing)
  • Electric Drive 31-2000lbs/ac (depending on row spacing)
  • 250 lb. hopper capacity
  • Optional 250 lb. stainless extension available for more capacity
  • Optional Stainless Steel lid available
  • Mounts for Pittsburg, 2 ½ Diamond, and Flat Tool Bar included.
  • Side Dress 3-pt frame and Pittsburg Frame available separately.