OrganicGUARD for Urban Greening & Public Tree Projects

Yes. Compostable tree mulch is well suited for urban forestry and public tree planting, where weed control, trunk protection, and long-term site cleanliness are essential during the establishment phase.

OrganicGUARD is designed to perform during the critical early years, after which natural soil biological processes gradually break down the material, avoiding long-term materials left behind in public spaces.

Yes — increasingly so.

Many municipalities are turning to compostable mulch solutions as manual and mechanical weed control costs continue to rise, especially in visible public spaces where herbicide use is restricted or no longer acceptable.

At the same time, conventional polyethylene is now widely recognized as a long-term pollutant, creating ongoing cleanup, disposal, and liability issues once projects mature.

As a result, OrganicGUARD is often selected when municipalities aim to:

• Reduce recurring weeding and maintenance costs

• Avoid long-term plastic residues in urban soils

• Simplify future site management in parks, streetscapes, and public spaces

Acceptance ultimately depends on internal policies and project objectives, but the shift away from polyethylene is increasingly driven by cost, practicality, and long-term responsibility.

OrganicGUARD is available with proven service lives of 3 or 5 years, covering the most critical establishment period for young trees.

Actual performance depends on site conditions, installation quality, and whether it is combined with surface mulch — a common and recommended practice in urban settings.

After its active service life, OrganicGUARD gradually breaks down in the soil through natural biological processes.

There is:

• No need for plastic removal

• No visible debris left in public areas

• No long-term material remaining once the tree is established

As the tree establishes, natural organic matter such as leaves, dust, and soil particles gradually accumulates over the mulch surface, forming a natural soil layer while soil biological activity progressively integrates the material over time.

OrganicGUARD is designed with a 3-year or 5-year service life, depending on the project requirements.

Over time, leaves, organic debris, and soil naturally accumulate on top of the membrane, gradually forming a thin vegetative soil layer above it. This is a normal and expected part of the process in perennial and reforestation systems.

Once OrganicGUARD reaches the end of its functional life, it does not fragment into microplastics. Instead, it undergoes progressive biological assimilation through natural soil microbial processes, occurring in three main stages:

1. Hydrolysis
   Water and naturally occurring enzymes produced by soil microorganisms begin breaking the chemical bonds of the compostable bioplastics, creating smaller, more accessible fragments.

2. Biodegradation
   These smaller fragments are then assimilated by microorganisms as a source of carbon and energy. Enzymatic activity further converts them into simpler organic compounds.

3. Mineralization
   Finally, the material is fully transformed into water (H₂O), carbon dioxide (CO₂), and microbial biomass, leaving no persistent microplastic residues in the soil.

This process ensures that OrganicGUARD fully returns to the natural carbon cycle, making it fundamentally different from polyethylene or oxo-degradable materials, which only fragment and persist in the soil.

No.

OrganicGUARD does not contain polyethylene and does not generate microplastics.

While polyethylene fragments into persistent microplastics that remain in the soil for decades, OrganicGUARD undergoes controlled fragmentation as part of the biodegradation process and is fully metabolized by soil microorganisms.

It biodegrades into:

• water

• CO₂

• biomass

No plastic residue remains in the soil.

From a short-term performance standpoint, both materials can provide effective weed suppression during the establishment phase.

The difference becomes clear over time.

In public and urban environments, polyethylene is frequently not removed once projects mature.
As a result, it:

• Remains buried in the soil

• Breaks down into fragments over time

• Creates visible and invisible plastic pollution

• Complicates future maintenance, replanting, or soil work

This often leads to situations where plastic is left in place simply because removal is costly, disruptive, or overlooked — resulting in long-term contamination rather than a clean end-of-life.

By contrast, compostable mulch performs its function during the critical years, then is gradually assimilated through natural soil biological processes, leaving no persistent plastic residues behind.

In visible, publicly accountable spaces, what remains underground matters just as much as what performs above ground.

Yes. OrganicGUARD is well suited for dense urban forest and canopy expansion projects, including closely spaced plantings.

Its low-profile installation and compatibility with surface mulch make it effective in projects where access, aesthetics, and long-term maintenance must be carefully managed.

Best practice in urban environments is to install OrganicGUARD as a base layer, then cover it with ramial wood chips (BRF) or mineral mulch.

This combination:

• Improves visual integration in public spaces

• Protects the system from UV exposure and mechanical wear

• Enhances moisture retention and soil biology

• Reduces long-term maintenance costs by limiting weed regrowth

• Minimizes the risk of trunk damage caused by string trimmers and mechanical weeding

OrganicGUARD works below the surface, ensuring continuous weed control, while natural mulch provides the visible finish and acts as a buffer between maintenance equipment and the tree.