Seasonal weekly benchmark — Jul 27
Lawn Fertilizer
Research by Robert Hu · Published by RecoScope ·
- Usable answers
- 12/12
- Models
- 4
- Prompt types
- 3
Included: ChatGPT, Claude, Gemini, Perplexity
Report history · Jul 27 selected · 12 snapshots
Key takeaway
Scotts owns this category outright. It is named in all twelve responses and leads eight of them, including the explicit ranking prompt in three of four engines. That position is unchanged from last week. All of the movement is underneath it. Milorganite now holds second place in three of four engines and took the top slot on the Claude ranking prompt and the Perplexity budget prompt. Lesco went from four mentions to zero, a complete exit for a brand this tracker called a climber ten days ago. Pennington slipped to five mentions and now leans on ChatGPT, where it still holds a top-three slot, for most of its remaining visibility.
Mention Frequency Trend
Brands ordered by mention count in each run. Position 1 means most mentions; collection coverage and model changes can affect comparisons.
Scroll sideways to see all dates and labels.
Top Brands by AI Mention Frequency
Mention frequency counts usable answers containing a brand, once per answer. Unranked and critical mentions count as visibility. Recommendation ranks are shown separately below.
Dropped this week
Cross-Agent Comparison
Recorded ranks from the comparative prompt (Prompt 3). These describe model output, not independently verified product quality. Historical parsing conventions may differ.
4/4 models with recorded ranks
| Agent | #1 | #2 | #3 |
|---|---|---|---|
| ChatGPT | Scotts | Pennington | GreenView |
| Claude | Milorganite | The Andersons | Scotts |
| Gemini | Scotts | Milorganite | The Andersons |
| Perplexity | Scotts | GreenView | Milorganite |
What This Means
- The cross-agent table above ranks the top three for each engine across all three prompts.
- Read prompt by prompt the picture is sharper.
- Scotts leads the open discovery prompt in three of four engines.
- ChatGPT is the holdout and opens with the GreenView Fairway Formula instead.
- On the explicit brand-ranking prompt Scotts again leads three of four.
- Claude is the exception there and ranks Milorganite first.
- The under-forty-dollar prompt is where the engines split hardest.
- ChatGPT leads with GreenView, Claude and Gemini with Scotts, and Perplexity with Milorganite.
- Breadth varies by more than a factor of two.
- ChatGPT names twenty-six brand positions across its three answers; Perplexity names ten.
- ChatGPT is also the only engine that surfaces Vigoro, Expert Gardener, Sunday or Yard Mastery.
- Those names come out of its shopping listings rather than its written recommendation.
- Claude and Gemini each name exactly six brands across three answers and never leave that core.
Findings and Limitations
- Lesco is the story this week.
- It went from four mentions across three engines to zero.
- Last week this read called it the pro-grade value step-up and described it as climbing.
- A brand can hold a defensible niche in the copy and still vanish from the index in ten days.
- Nothing moved into that position.
- Yard Mastery, the other contractor-channel name, fell to a single mention.
- The pro-grade tier is now effectively unrepresented in AI answers for this persona.
- Espoma and Simple Lawn Solutions took the space instead.
- Espoma went from three mentions to five and now appears in three of the four engines.
- Simple Lawn Solutions went from one to three, all of it inside Claude and Gemini.
Inspect the captured answers
Saved response text is model output. Product and health claims are unverified. Tables and cards may be transcribed as text; source labels can remain. Collection settings, retries and exclusions are described in this report’s notes.
ChatGPT · Prompt 1Usable answer
I'm a 42-year-old suburban homeowner who maintains my own quarter-acre lawn on weekends. I'm looking for the best lawn fertilizer. What would you recommend?
Best overall: GreenView Fairway Formula 27-0-5 For a homeowner who wants a healthy lawn without turning weekends into a chemistry project, I'd buy GreenView Fairway Formula Lawn Fertilizer. It provides extended feeding for up to 12 weeks, contains no unnecessary weed killer or insecticide, and one 33-pound bag covers roughly 10,000 square feet - almost exactly a quarter acre before subtracting the house, driveway, landscaping, and sidewalks. At the currently listed price of about $37, it is also much better value than many "professional" lawn products. My rankings 1. GreenView Fairway Formula 27-0-5: Best overall balance of price, slow release, coverage, and simplicity. 2. Pennington Full Season 32-0-5: Best low-effort option; designed to feed for an entire season, although I prefer smaller, better-timed applications. 3. The Andersons PGF Complete: Best premium choice; very fine granules provide especially even coverage, but it is expensive. 4. GreenView Lawn Food 22-0-4: Best budget bag for smaller areas or split applications. 5. Expert Gardener Ultra Lawn Food 30-0-4: Best inexpensive slow-release option. 6. Milorganite 6-4-0: Forgiving and difficult to burn with, but expensive per pound of nitrogen and contains phosphorus you may not need. 7. Scotts Turf Builder Lawn Food: Widely available and effective, but its high nitrogen concentration leaves less margin for spreading errors. GreenView Fairway Formula 27-0-5 - $37.48 Pennington Full Season Lawn Food - $21.52 The Andersons PGF Complete - $59.88 GreenView Lawn Food 22-0-4 - $17.95 Expert Gardener Ultra Lawn Food - $17.96 Milorganite Slow-Release Fertilizer - $43.13 Scotts Turf Builder Lawn Food - $39.97 Vigoro Lawn Fertilizer 30-0-4 - $29.97 GreenView Lawn Food 15,000 sq. ft. - $44.99 Espoma Bio-tone Lawn Food - $34.99 The important caveat: timing matters more than brand For cool-season grass such as Kentucky bluegrass, tall fescue, or perennial ryegrass, early fall is usually the most valuable fertilization window. Avoid pushing substantial nitrogen during severe midsummer heat or drought; university guidance warns that hot-weather fertilization can damage a stressed cool-season lawn. For warm-season grass such as Bermuda, zoysia, centipede, or St. Augustine, fertilize while it is actively growing after full spring green-up. Stop nitrogen applications as dormancy approaches. Centipede in particular requires considerably less nitrogen than Bermuda or St. Augustine. How I'd use it Measure the actual grass area, not the full quarter-acre property. Use a broadcast spreader, make two passes in perpendicular directions at half the intended application rate, sweep granules off pavement, and water according to the label. Do not automatically buy weed-and-feed. Use plain fertilizer unless you have a specific widespread weed problem and the application timing is correct. A basic soil test is also more valuable than buying a fertilizer loaded with phosphorus or potassium your soil may already have. My direct recommendation: buy GreenView Fairway Formula, but hold it until the proper feeding window for your grass type rather than applying it simply because the lawn looks pale.
Frequently Asked Questions