Premium 60/40 Sun & Shade Grass Seed for a Thicker, Deep-Green Lawn
The grass seed you put into a lawn matters. Aerating Thatching Co. uses a premium 60/40 sun and shade seed mix selected for Western Washington lawns to build density, repair thin and bare areas, blend with existing lawns and sod, and create the fine-textured, deep-green appearance homeowners are looking for.
How we offer it: Premium Overseeding is included with our Lawn Tune-Up and Full Meal Deal Lawn Renovation. It can also be added to Core Aeration when the lawn needs more density.
What Is Our Premium 60/40 Grass Seed Mix?
It is our professional 60/40 sun and shade grass seed mix used for overseeding Seattle-area lawns. The mix is selected for a combination of deep green color, fine texture, rapid establishment, disease resistance and traffic tolerance, while blending naturally with the color and texture of Western Washington lawns and sod.
Typical Seattle-Area Lawns
A strong all-around premium choice for the mixed sun, shade and everyday growing conditions found on many Western Washington properties.
Build Lawn Density
Overseeding introduces new grass into thin areas so the lawn can become fuller, more uniform and better filled in.
Thin Areas & Sod Repair
Its color and fine texture make it especially useful where new grass needs to blend into an established lawn or repaired sod area.
The Premium 60/40 Sun & Shade Mix We Use
Not all grass seed produces the same lawn. Seed selection affects appearance, texture, establishment and how well repaired areas blend with the grass already growing around them.
Our Premium 60/40 Sun & Shade Mix is built for Western Washington lawns and selected to produce a deep-green, fine-textured lawn while providing the performance characteristics we want from professional overseeding.
It is an excellent choice where a combination of rapid establishment, disease resistance and traffic tolerance are important.
What This Premium Seed Adds to Your Lawn
Overseeding is not simply about spreading more seed. The goal is to add the right grass so new seedlings improve the lawn rather than creating obvious patches with a different color or texture.
Helps Thicken Thin Lawns
New seedlings fill available spaces between existing grass plants and help rebuild lawn density in thin or worn areas.
Deep Green Color
The mix is selected for the rich green appearance many homeowners want from a professionally improved lawn.
Fine, Finished Look
A finer texture helps new grass blend naturally into the lawn rather than standing out as coarse replacement grass.
Fills Bare & Worn Areas
Premium Overseeding is especially useful when seasonal stress, pets or normal lawn use have left weak or thin areas.
Traffic Tolerance
Traffic tolerance makes this a practical choice for lawns that need to look good while still functioning as everyday residential lawns.
Disease Resistance
Disease resistance is one of the performance characteristics we look for in professional-quality grass seed selected for local lawn improvement.
60% Blue Tag Seed
Our premium 60/40 blend contains 60% blue tag seed selected for superior lawn quality over a broad range of environmental conditions.
For a homeowner, the practical point is simple: when we are adding thousands of new grass plants to your lawn, we want to start with professional-quality seed selected for the appearance and performance expected from the finished lawn.
- Selected for consistent lawn quality
- Designed for a more uniform finished appearance
- Fine texture and deep green color
- Appropriate for professional overseeding and repair work
- Chosen for Western Washington lawn conditions
The Material Is Part of the Service
Aeration can prepare the lawn beautifully, but overseeding results still depend on what is actually being planted.
That is why we do not treat grass seed as an afterthought. Premium seed, proper lawn preparation, good seed-to-soil contact and homeowner after-care all need to work together.
Who Is the Premium 60/40 Mix Best For?
This is our primary premium seed choice for most typical Seattle-area lawns. It is especially useful when the goal is to add density while maintaining a natural-looking blend of sun and shade performance, color and texture.
Mixed Sun & Shade
A strong choice for residential lawns where different areas receive different amounts of sun throughout the day.
Thin or Patchy Grass
Appropriate when the existing lawn is still worth improving but needs fresh seedlings to rebuild density.
Bare or Worn Areas
Useful for filling areas that have thinned because of normal wear, seasonal stress or localized lawn damage.
Sod Repair
The mix is developed to blend with the color and texture of Western Washington lawns and sod, helping repaired areas look more natural as they establish.
Seasonal Lawn Recovery
Overseeding can help rebuild density after a lawn has thinned following winter conditions or summer stress.
Homeowners Wanting a Better Finish
A good fit when lawn appearance matters and you want professional-quality seed rather than treating the seed itself as the cheapest part of the job.
Seed Does Not Fix Every Lawn Problem
If the lawn is thin because the soil is badly compacted, covered by heavy thatch or moss, or struggling with poor underlying soil, simply applying more seed may not address the real limitation.
That is why Stewart may recommend Core Aeration, Dethatching (Power Raking), or Soil Amendments as part of the overall solution.
Choose the Level of Lawn Improvement That Fits the Problem
Premium seed is not treated as a separate retail product. We use it as part of professional overseeding, paired with the lawn preparation appropriate for the job.
Core Aeration + Premium Overseeding
If the lawn is already in reasonably good condition but needs more density, Premium Overseeding can be added to Core Aeration.
- Relieve compaction
- Create openings in the lawn
- Add premium seed for density
Lawn Tune-Up
Premium Overseeding is already included in the Lawn Tune-Up, along with Core Aeration and Starter Fertilizer.
- Core Aeration
- Premium 60/40 Overseeding
- Starter Fertilizer
Full Meal Deal
Premium Overseeding is also included in our more complete renovation for lawns that need surface cleanup before aeration and seeding.
- Dethatching (Power Raking)
- Core Aeration
- Premium 60/40 Overseeding
- Starter Fertilizer
Good Seed Works Best When the Lawn Is Prepared for It
Seed quality matters, but seed still needs the right environment to germinate and establish. For that reason, we pair Premium Overseeding with lawn preparation rather than simply scattering seed onto an unprepared surface.
Evaluate the Lawn
Stewart looks at lawn density, existing grass, compaction, sun and shade, surface buildup and the areas you want improved.
Prepare for Seed Contact
Core Aeration creates openings in the lawn and improves opportunities for seed, moisture and soil to come together.
Apply Premium Seed
The 60/40 Sun & Shade Mix is spread across the lawn to rebuild density and fill thin areas.
Water & Establish
Homeowner watering becomes critical after seeding. The surface must remain appropriately moist while new seedlings germinate and establish.
A Premium Seed Mix That Blends Into Western Washington Lawns
Lawn repair can look awkward when the new grass does not match the lawn around it. A repaired area may grow with a noticeably different shade of green, texture or overall appearance.
Our Premium 60/40 Mix has been developed to blend with the color and texture of Western Washington lawns and sod. That makes it especially useful when overseeding existing turf or repairing areas where sod has become thin, damaged or unsuccessful.
- Thin areas within otherwise established grass
- Worn sections of the lawn
- Bare areas that need to be rebuilt
- Areas of sod needing grass-seed repair
- Lawns where a consistent finished appearance matters
Blending Takes Establishment
New seed does not become a mature lawn immediately. Early seedlings can look different from established grass simply because they are young.
As the new grass develops, fills in and begins being mowed with the existing lawn, the goal is a more uniform overall appearance.
Premium Seed Is an Important Ingredient — Not a Cure-All
Premium Overseeding Can Help
- Rebuild lawn density
- Fill thin and worn areas
- Repair bare areas
- Improve the uniformity of an existing lawn
- Add fresh, vigorous grass plants
- Improve sod-repair areas as new grass establishes
Grass Seed Does Not
- Guarantee germination
- Replace proper watering
- Physically relieve compacted soil
- Remove heavy thatch or moss buildup
- Correct poor soil structure by itself
- Instantly turn a severely damaged lawn into mature turf
Watering Is What Turns Premium Seed Into New Grass
Once seed is applied, homeowner after-care becomes one of the most important parts of the process. Even excellent grass seed needs adequate moisture and suitable growing conditions to germinate and establish.
Want to See What Aeration, Premium Overseeding and Fertilizer Can Do Together?
Browse real Lawn Tune-Up projects from Seattle-area properties. Before-and-after examples are a better way to understand the type of improvement professional lawn preparation and overseeding can produce than relying on generic stock photography.
Premium 60/40 Grass Seed FAQ
What is the Premium 60/40 Sun & Shade Grass Seed Mix?
It is the professional grass seed mix Aerating Thatching Co. uses for Premium Overseeding on most typical Seattle-area lawns. It is selected for Western Washington lawns and provides deep green color, fine texture, rapid establishment, disease resistance and traffic tolerance.
What does “60/40 Sun & Shade Mix” mean?
It is the name of the professional seed blend we use for lawns that experience the combination of sun and shade common on many residential properties. It is our primary premium seed choice for most typical Seattle-area lawn overseeding projects.
Does your premium seed contain blue tag seed?
Yes. Our Premium 60/40 Mix contains 60% blue tag seed selected for superior lawn quality across a broad range of environmental conditions.
Can I buy this seed at a nursery or box store?
No. The Premium 60/40 Mix we use is not available for purchase at nurseries or box stores. We use it as part of our professional overseeding and lawn improvement services.
Is Premium Overseeding included in the Lawn Tune-Up?
Yes. Our Lawn Tune-Up combines Core Aeration, Premium Overseeding with our 60/40 seed mix, and Starter Fertilizer.
Is Premium Overseeding included in the Full Meal Deal?
Yes. Our Full Meal Deal Lawn Renovation combines Dethatching (Power Raking), Core Aeration, Premium Overseeding and Starter Fertilizer for lawns that need a more complete renovation.
Can I add Premium Overseeding to Core Aeration?
Yes. Premium Overseeding can be added to Core Aeration when the lawn needs increased density in addition to compaction relief. If you also want Starter Fertilizer, the Lawn Tune-Up may be the more complete option.
Is this mix good for thin or bare areas?
Yes. Rebuilding density, filling thin areas and repairing bare or worn sections are some of the primary reasons we use the Premium 60/40 Mix. The underlying cause of the thinning still matters, so some lawns may also need Core Aeration, Dethatching (Power Raking) or Soil Amendments.
Is the Premium 60/40 Mix good for sod repair?
Yes. The mix is developed to blend with the color and texture of Western Washington lawns and sod, making it a strong choice where failed, damaged or thin sod areas are being repaired with seed.
Why pair overseeding with Core Aeration?
Grass seed benefits from contact with soil and consistent moisture. Core Aeration removes soil plugs and creates thousands of openings through the lawn, providing additional opportunities for seed, soil and moisture to come together.
Do I need Starter Fertilizer with Premium Overseeding?
We recommend Starter Fertilizer with overseeding because its purpose is to support new grass during early establishment and promote strong root development. It is included with both the Lawn Tune-Up and Full Meal Deal.
Can I just spread grass seed over the lawn without aerating?
Seed can germinate anywhere conditions are suitable, but simply broadcasting seed onto an unprepared lawn can leave much of it with poor soil contact. Core Aeration is one of the ways we improve the lawn environment before professional overseeding.
How quickly will the new grass appear?
Germination and establishment depend on temperature, moisture, seed-to-soil contact, sunlight, soil conditions and the different grasses within the mix. Some areas may begin showing new growth before others. The important goal is consistent establishment and progressive lawn thickening rather than expecting the entire lawn to mature at once.
How important is watering after overseeding?
Very important. Newly seeded areas need consistent moisture during germination and early establishment. Use gentle watering as necessary to keep the surface moist without creating puddles or runoff, and adjust for current weather. Follow our Seattle Lawn After-Care Guide for complete instructions.
Will Premium Overseeding fix a lawn with heavy moss or thatch?
Seed alone may not be enough. If heavy surface material is preventing seed from reaching the soil, Stewart may recommend Dethatching (Power Raking) before aeration and overseeding. That combination is built into the Full Meal Deal Lawn Renovation.
What if poor soil is the reason my lawn keeps thinning?
Overseeding rebuilds grass density, but it does not correct poor soil structure by itself. If the underlying soil is contributing to recurring weak areas, Stewart may recommend Soil Amendments alongside the lawn improvement service.
Which service should I choose if I want this premium seed?
If your lawn is already in decent condition and mainly needs compaction relief and added density, Premium Overseeding can be added to Core Aeration. For thin or patchy lawns needing the complete aeration + seed + fertilizer combination, choose the Lawn Tune-Up. If the lawn also needs substantial surface cleanup or Dethatching (Power Raking), the Full Meal Deal may be the better fit.
Tell Stewart What Your Lawn Is Doing
If your lawn is thin, patchy, worn, compacted or struggling to fill in, you do not need to diagnose the entire problem yourself. Tell us what you are seeing and we can determine whether Premium Overseeding added to Core Aeration, a Lawn Tune-Up, or a more complete Full Meal Deal makes the most sense.
Aerating Thatching Co. is owner-operated, and Stewart personally performs the work. The goal is to recommend what fits the lawn rather than automatically pushing the largest package.
Serving the Seattle, North King County and South Snohomish County service areas listed on LawnTuneUps.com.