- info@infunplastic.com
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- Zhoukou city, Henan province, China
Mulch film is designed to last one season — not because the quality is low, but because that is what the product is for. What “one season” actually means, the four things that shorten it, how black, clear, silver-black and biodegradable films differ, and how to get full value before the film comes off the bed.
Mulch film is engineered against a growing season: the weeks from laying over a prepared bed to removal after harvest. For a tomato cycle that might be five to seven months; for a fast brassica crop, three. The film is not built to survive multiple years of open-field UV — loading it with that much stabilizer would make it uneconomical for its job, which is one clean, effective season of weed suppression, moisture retention and soil warming at commodity cost. Judging mulch film by greenhouse-film standards is a category error; judging it by whether it lasts its full crop cycle is the right test.
| Type | Typical full-season behavior | Best use | End of season |
|---|---|---|---|
| Black PE | Holds one full season; suppresses weeds completely | The default for row crops and vegetables | Remove whole, recycle |
| Silver-black | One season; silver face repels aphids and whitefly | Pepper, melon, chili — pest-pressure crops | Remove whole, recycle |
| Clear | Warms soil fastest; ages quickest under UV | Soil solarization and early spring warming | Remove promptly after its job is done |
| Biodegradable | Engineered to degrade after the cycle; ≤ 30 mic | Fields where removal labor is the bottleneck | Till in per supplier schedule |
Biodegradable mulch film is capped at around 30 mic for a physical reason: soil microorganisms must be able to consume the material within a season or two, and thicker film cannot decompose on that schedule. Degradation is triggered by soil temperature, moisture and microbial activity — which means cold or dry soils slow it down substantially, and a biodegradable film is not a “forget it in the field” product either. Fragments above the microbial schedule still need collecting. And one hard rule: biodegradable film never goes into the PE recycling stream — mixing the two contaminates the recyclate. For the full end-of-season picture, see our removal and recycling guide.
Small punctures are the cheapest problem to fix: a patch of mulch tape applied the day a tear appears preserves the film’s moisture barrier for the rest of the cycle. The same tear left open desiccates the bed edge and becomes a full-width split within weeks.
Within the normal mulch range — roughly 10–30 mic for PE mulch film — the right question is not “how thick can I get” but “how thick does this crop cycle need.” A short leafy-green cycle runs fine at the thin end; a seven-month pepper cycle through a hot summer justifies the thicker spec. Overspecifying wastes polymer and money; underspecifying buys a mid-season failure that costs more in weed competition than the film saved. Send us your crop, cycle length and region, and we will recommend one specification — free samples are available for a laying trial before you commit.
How long does mulch film last?
Mulch film is designed for one growing season — the length of one crop cycle from laying to removal. It is not engineered for multi-year open-field UV exposure; that is greenhouse film’s job.
Is one season a quality limitation?
No — it is the design target. Loading a commodity covering product with multi-year UV stabilizer would raise its cost without adding value for a single-cycle crop.
Why did my mulch film tear halfway through the season?
Usually one of four causes: UV package not matched to the region, edge soil heat, mechanical damage from traffic or cultivation, or over-tension at laying. The tear pattern tells you which.
Can mulch film be reused next season?
Not realistically. After a full season of open-field UV the film has lost most of its reserve strength; re-laying embrittled film fails early and complicates removal. Plan one season per layer.
How long does biodegradable mulch film take to degrade?
Degradation depends on soil temperature, moisture and microbial activity — typically completed within months after till-in in warm, irrigated soils, and slower in cold or dry ones. Biodegradable film is capped around 30 mic so the schedule holds.
What thickness should I choose for a long-season crop?
Match thickness to cycle length and summer heat — longer cycles justify the thicker spec within the 10–30 mic mulch range. Send crop, cycle length and region for a recommendation; free samples are available for laying trials (MOQ 1,000 kg per specification, lead time typically 30+ days).
Related reading: Mulch Film Thickness Guide · Mulch Film Removal & Recycling · Silver-Black Mulch Film — Vietnam Case · Request a Quote
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