Petramax ReadyRoll Biodegradable Grass Seed Mat for Lawn (10

The Verdict

The promise is seductive: unroll a carpet, water it, and watch a lawn appear. No measuring seed, no raking, no fighting birds off a fresh broadcast. The Petramax ReadyRoll is a 108-square-foot biodegradable mat embedded with grass seed — essentially a pre-seeded carpet for bare patches. At 3.1 stars across 155 ratings, though, the reality is messier than the marketing. Here’s what you’re actually getting.

What’s in the roll

Each package contains a single 108 sq ft mat made from coconut fiber (coir) with seed embedded between layers of biodegradable netting. The mat is roughly 3 feet wide — you’ll need to cut it to fit your space with a utility knife or scissors. Unlike loose seed, there’s no measuring cup involved. Unroll, lay flat, anchor, water. That’s the entire installation process.

The “All Year” claim in the listing refers to the seed blend being formulated to germinate across a wider temperature range than typical cool-season mixes. That’s genuinely useful for homeowners who missed the ideal September or April planting windows.

Performance and real-world use

The concept works — when it works. The coir mat holds moisture well, which is critical during the germination phase. On slopes, this is a legitimate advantage over broadcast seeding; the mat keeps seed from washing downhill. Several buyers confirmed this: “Used it on a steep bank where nothing would grow before. The mat stayed put and grass came up where I put it.”

But the 3.1 average tells a different story for many others. The most common complaint is inconsistent germination — patches of lush grass adjacent to completely bare sections. One reviewer noted: “Followed the instructions to the letter. Watered twice daily. Half the mat grew, the other half did nothing.” This suggests either uneven seed distribution within the mat or a blend with variable germination rates.

The lack of seed species disclosure is a real problem for a product at this price point. You cannot verify whether you’re getting a premium blend or whatever seed was cheapest at the packing facility. For a product where the seed is the entire point, that’s an opaque answer to a fair question.

Where it falls short

The mat’s edges are prone to fraying during handling and installation. More critically, without proper anchoring — landscape staples or U-pins every few feet — heavy rain can shift the mat and expose bare soil. That’s an extra purchase the listing doesn’t emphasize enough.

Preparation matters more than the listing suggests. The soil underneath needs to be loosened, raked level, and cleared of debris for the mat to make good contact. Skipping this step leads to the patchy results many reviewers report. This isn’t a lazy-weekend product; it’s a proper-ground-prep product with a convenient delivery mechanism.

Who should buy this

Buy it if you have a slope that won’t hold loose seed, or if you’re tired of reseeding the same patch because birds eat the seed before it germinates. The mat solves both problems. Also reasonable for small patches where buying a full bag of seed feels wasteful.

Skip it if you’re covering a large area — the per-square-foot cost is significantly higher than bulk seed. Skip it if you need a specific grass type for your climate zone; you can’t choose what you’re getting. And definitely skip it if you’re not willing to prep soil properly and anchor the mat down.

FAQ

Q: How long does the mat take to degrade? A: The coconut fiber and netting break down over roughly 8-12 weeks, by which point the grass should be established enough to hold soil on its own. You won’t need to remove anything.

Q: Can I lay this over existing grass? A: Technically, but you’ll get poor results. The mat needs soil contact for seed germination. Rake down to bare soil first, or the seed will germinate on top of dead grass and struggle to root.

Q: How often do I need to water? A: Daily for the first two weeks, enough to keep the mat consistently damp but not soaked. After that, taper to every other day through week four. Missing waterings during the germination window will produce bare patches.

The Verdict

The Petramax ReadyRoll is a decent solution for a specific problem — slopes, erosion control, and bird-plagued patches — but it’s not the set-and-forget lawn fix it claims to be. Proper soil prep and anchoring are mandatory, not optional. The undisclosed seed blend and inconsistent germination results keep this from being a confident recommendation.

Buy it if you have a small to medium bare area, especially on a slope, and you’re willing to prep the soil and anchor the mat properly.

Skip it if you want guaranteed results, need a specific grass species, or are covering anything larger than a few hundred square feet — bulk seed is cheaper and more reliable at scale.

Rating: 3.3/5 — A solid concept undermined by inconsistent execution and a lack of transparency about the seed inside.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.