Planter Liners

Planter liners are essential for plants and planters. DeepStream manufactures cost effective commercial garden planter liners for every planter.

16 different size and shaped commercial planter liners are displayed on a tropical roof top deck landscaped with green palms trees, bamboo, and podocarpus. A large man is standing on top of one of the garden planter liners to show how strong they are.
DeepStream commercial planter liners with advanced drainage.

When selecting your outdoor planters, keep in mind that drainage is critical to the health of your plants grown in containers as watering, and it is very difficult to remedy after the fact.

DeepStream’s cost effective Commercial Stock Planter Liners and Custom Welded Garden Planter Liners use food safe plastic and are designed with advanced drainage options making them perfect for landscaping or container gardening:

  • Improved drainage with side wall drains and 3-part drain pads.
  • Reduce water usage.
  • Eliminate leaks.
  • Lower maintenance cost.
  • Reduce the quantity of planting medium.
  • Prevent wooden planter boxes from rotting out.
  • Prevent Solar Gain from steaming the root ball.
  • Hide drip irrigation systems and electrical wiring.
  • Catch or redirect water overflow with side wall threaded drain ports.
  • Tapered shape makes replanting slip-out-easy and saves shipping costs.
  • Less expensive, tougher, and more waterproof than fiberglass liners.
The President of DeepStream Designs on a tropical penthouse roof deck measuring the temperature of the outer plank on Commercial Wood Planters heated by the sun.
As shown by Sheila, the President of DeepStream Design, on a clear 80-degree day the temperature of the outside of planks on Commercial Wood Planters, or pot, can reach 124-degrees, steaming the root ball inside unless there is a thermal air gap between the planter box and waterproof liner as found with DeepStream’s unique liner within a wood planter box design.
Close up of measurement of solar thermal gain, 124-degrees on a sunny 80-degree day, on the outside planks of Commercial Wood Planters.
Measuring the solar thermal gain, 124-degrees on a sunny 80-degree day, on the outside planks of Commercial Wood Planters. DeepStream’s liner inside a box provides a thermal gap allowing the root ball stays at air temperature so that landscaping flourishes. The waterproof liner inside the planter box has advanced drainage and hides drip irrigation lines.

Planter Liner and Drainage Design.

In full bloom, a Modern Wood Garden Planter with Trellis made with Jakob 316-stainless steel mesh and aluminum Trellis uprights on a penthouse roof terrace shows how vines have grown up the mesh to create a natural privacy screen wall fully engulfed in white flowers.

Generally, more container-grown plants die from drowning than from lack of water. “Old school” drain holes on the bottom and gravel drainage medium simply do not work and will quickly clog.  Plants in pots, or single wall planters like dark fiberglass or aluminum, are often over watered because they look droopy when in fact they suffering from thier root ball being steamed by solar gain. DeepStream liner inside a planter box design eliminate solar gain and we elevate the drainage hole center approximately 2″ up the sides of your liners to provide a “reservoir” for the tap roots and allow clay “fines” present in almost all planting mediums to settle instead of clogging drains and drowning the plants.

DeepStream pioneered modern drainage practices with side-wall drains preventing silt blocking geotextile drain covers, 3-layer drain filter pads with Tremdrain for increased drainage area and BioBarrier to prevent root blockage. We place from one to three 3/4″ threaded drainage ports on our 16 proprietary stock plastic planter liners, to which various plugs, hose barbs, and valves may be attached. Liners are non-structural and are meant to be placed inside planter boxes. Drip trays are available for planters used on covered balconies or indoors.

Depending on your plants, planting mixture, and local weather, you may need to add more drains. Additional drain holes can be added as required by drilling additional holes in the side walls.

A studio photo looking straight down inside a square wood restaurant planter showing how the waterproof liner sits inside on a hidden structural aluminum frame.
These square wooden restaurant planters show how a separate waterproof liner, supported by a hidden structural aluminum frame, prevents soil from contacting the wood and the sun from heating the root ball.
Detailed photo on a tropical roof terrace showing how easy DeepStream tapered stock planter liners with advanced drainage make it to replant and recondition roots.
DeepStream tapered stock planter liners with advanced drainage make them economical to ship and easy to replant and recondition roots. It’s hard to overemphasis the separate waterproof liners importance to DeepStream’s uniquely engineered 3-component planter systems adaptability and longevity.

Cost Saving Tips

You can extend the life of existing or new garden planters by using plastic planter liners. Liners contain the planting medium, keeping the soil away from the exterior shell of the planter box, and controlling drainage.  This is especially important for wooden planters. Buildings often have concrete planters, cast-in-place, which often crack in just a few years due to settling and now leak. This causes expensive structural problems by rusting the rebars and splitting the concrete in a process called spalling. In some instances they can benefit from a retrofitted molded or custom-welded plastic liner with flanges over the top of the existing planter side walls..

NOTE:  If you’re building, or buying planters that require liners keep in mind that our proprietary rotomolded planter liners, available in 16 common sizes, are the least expensive option. Our custom welded liners require a bit more material and a lot more labor and are therefore more expensive, although are still much less expensive, more durable and more waterproof than fiberglass liners.

If you have questions, need more information, or would like to discuss your project, please call Sheila at (305) 857-0466 or email her at dsdmiami@gmail.com.  Sheila has decades of experience to call on as a developer, general contractor, and property manager, with thousands of planter installations and remediation project experiences to help you with budget-saving ideas.  


Need important information on Selecting Planter Liners before you purchase? This blog post will help.

Custom Planter Liners and Drip Trays

DeepStream is the landscape industries source for custom planter liners of any size.

Do you need extra large or custom liners for your simple to extremely complex designs? 1 or 100, we are the national sources relied on by landscape architects, landscape contractors, and homeowners for over 15 years.

DeepStream doesn’t use distributors so it is easy to turn your installation challenges into solutions quickly with one phone call at factory-direct prices. Stronger and more waterproof than fiberglass planter liners our custom planter liners are constructed of food grade polypropylene, LLDPE or HDPE plastic.

A Custom Welded Rectangular Waterproof Food Safe Plastic Planter Liner shown on a table in front of bamboo in a tropical roof deck garden.
DeepStream welds Waterproof Food Safe Plastic Planter Liners to fit any size planter.

Tips for designing Custom Planter Liners

From simple to complex installations, it’s best to compartmentalize your planting with modular liners to speed installation, limit potential drainage problems, minimize labor to rectify issues that may arise in the future.

Depending on size, DeepStream welds Plastic Planter Liners for your projects using 1/4″ to 1/2″ polypropylene, LLDPE, or HDPE plastic, as used in construction of both food equipment and large chemical tanks. Holes for side wall drainage and hidden irrigation lines can be added on site with a simple hole saw. 

Construction techniques may include double-welded gussets for optimum wall support.  Even with internal gusset to support liner walls, liners should be supported from the outside by a planter box or inserted into the ground for root control.

A Custom Welded Modular Planter Liner with hidden drainage and drip irrigation for a large commercial roof deck landscaping installation holding partially planted trees and bushes.
This Custom Welded Modular Planter Liner, for a large commercial roof deck landscaping project, is equipped with hidden drainage and drip irrigation and isolates any potential problems to individual cells.

Polypropylene is extremely durable, however it is not impervious to the sun’s UV rays and should be completely buried or painted.  Although a little more costly Liners can also be made from Marine-Grade HDPE (high-density polyethylene) which is highly UV-resistant. Both plastic are food safe and used in kitchen equipment and food processing applications.

When a customer need a large volume of a certain size planter liner we custom form rotomolded planter liners our or recycled LLDPE plastic to reduce costs to a bare minimum.

Large custom-welded liner filled with water to show wall strength and test for leaks.
As with every Custom-Welded Planter Liner, this complex design with double-welded gussets and steps is being tested for waterproof strength. Black is more UV resistant than black.
A studio photo showing the construction of a tall rectangular custom Waterproof Planter Liner with internal supports.
A tall rectangular Custom Waterproof Planter Liner with internal supports. While stock liners are less expensive tall, short, long, even many odd shapes can be accommodated via our custom manufacturing process.

Buy factory direct. For further assistance, a quick quote, and volume pricing call Sheila at  (305) 857-0466.

Planter Drip Trays

Planter Drip Trays catch overflow and allow it to evaporate without staining your deck or interior floors.

The drip tray is sized so that the tapered base of the rotomolded Waterproof Plastic Planter sits inside it without taking up extra space.  Perfect for indoor and balconies.
A rotomolded Waterproof Plastic Planter Liner with threaded advanced drainage port sitting in a custom sized drip tray for indoor and outdoor use.

Stock drip trays are approximately the same size as the lower step beneath the rim of DeepStream’s rotomolded liners and are sized to fit on Mariner planter aluminum liner support frames. Drip trays won’t be visible when used with DeepStream planters and they can be custom-welded to any size you need if you didn’t order a DeepStream Planter or rotomolded Waterproof Liner.

A black square Custom Welded Plastic Drip Tray shown on a table set in front of bamboo on a tropical roof deck.
Custom Welded Drip Trays for indoor planters are also used on covered balconies to catch drainage, preventing stains on the floor or deck. The drip tray depth allows for evaporation of excess water.

As with all custom and semi-custom garden products produced by the hands of craftsmen, delivery times will grow longer as Spring progresses into Summer, even with “quick ship” programs, so plan ahead and order early.

If you have questions, need more information, or would like to discuss your project, please call Sheila at (305) 857-0466 or email her at dsdmiami@gmail.com.  Sheila has decades of experience to call on as a developer, general contractor, and property manager, with thousands of planter installations and remediation project experiences to help you with budget-saving ideas.  

Planter drainage is critical to plant health.

DeepStream’s advanced 3-Layer Drain Pack

3-layer Drain Packs with TREMdrain and Biobarrier complete your advanced planter drainage solution.

Studio photo showing the detail of DeepStream's advanced 3-Part Planter Liner Drain Pack shown both as components and as a finished pad.
DeepStream’s convenient Drain Pack Components: TremDrain Board increases the drainage area and provides channels for drainage efficiency , filter fabric reduces drain blockage by silt and organic material, BioBarrier helps prevent root blockage for up to 15-years.
A studio photo showing a grouping of planter liner drain accessories including a threaded drain hose, a 90-degree threaded bulkhead drain, a valve, and a brass garden hose to NPT threaded adapter.
Optional garden planter drain accessories for directing water flow attach to the threaded port in DeepStream’s waterproof liners

Depending on your plants, planting mixture, and local weather, you may need to add more drains.  Additional drain holes can be added as required by drilling additional holes in the side walls.

Direct link to: DeepStream Stock Planter Liners and Prices


Tips for improving Planter Drainage

Drain packs must be used in conjunction with a proper planting medium for container gardening, and inorganic filtering material to slow the drainage water so that any clay “fines” that could coat the geotextile will instead settle to the bottom of the liner below the side-wall drain.

  • When selecting your outdoor planters, keep in mind that drainage is critical to the health of your plants grown in containers, and it is very difficult to remedy after the fact. The design of the planter liner is one of the important components.
  • Generally, more tended plants die from drowning than from lack of water. “Old school” drain holes on the bottom and gravel drainage medium simply do not work and will quickly clog.  DeepStream elevates the drainage hole center approximately 2″ up the sides of your liners to provide a “reservoir” for the tap roots, but more importantly, that space allows clay “fines” present in all most all planting mediums to settle instead of clogging drain packs.
  • DeepStream pioneered modern drainage practices with side-wall drains and 3-layer drain filter packs. DeepStream places from one to three 3/4″ threaded drainage ports on its 16 stock proprietary plastic planter liners, to which various plugs, hose barbs and valves may be attached.  Liners are non-structural and are meant to be placed inside planter boxes.
  • Depending on your plants, planting mixture, and local climate, you may need to add more drains.  Additional drain holes can be added as required by drilling additional holes in the side walls with a hole saw bit. If additional threaded ports are needed we stock two-part watertight bulkhead fittings.
  • Planting mediums for container gardening are as varied as local climates and plant species.  Here in Florida, we can get 6” of rain in a day in the rainy season, so we need a quick draining material and we often add perlite. If you have a dry climate, you may need to add more vermiculite to retain water.  Since Florida also has a dry season where it my not rain for a month or more at a time, we use drip irrigation, as the planting medium we use for the rainy season dries out far too quickly during the dry season.  For more in-depth information on drip irrigation, drainage, and the many aspects of container gardening check the Helpful Resource Links to planterblog.com listed at the bottom of this page.

Need important information on Selecting Planter Liners before you purchase? This blog post will help.

Stock Planter Liners

Searching for rugged waterproof Planter Liners?

16 sizes of commercial planter liners available for same-day shipping. Food safe LLDPE plastic planter liners with advanced drainage at factory-direct prices.

16 different size and shaped commercial planter liners are displayed on a tropical roof top deck landscaped with green palms trees, bamboo, and podocarpus. A large man is standing on top of one of the garden planter liners to show how strong they are.
DeepStream commercial planter liners with advanced drainage. Tougher, more waterproof, and less expensive than fiberglass planter liners.

These are the planter liners specified by Landscape Architects. Planter liners are essential for both plants and planters. A planter liner improves drainage, prevents solar gain from steaming the root ball, and eliminates wooden planter box rot.

Tougher, more waterproof, and less expensive than fiberglass planter liners, the tapered shape reduces shipping cost by stacking, aids drainage and replanting.

Planter Liner Costing and Specification-Grid-Website-9-01-21
Planter Liner Costing and Specification Grid 9-01-21

Click here to download a printable stock liner pdf price and specification chart for Stock Liners

Click here to download a printable stock liner pdf specification sheet with pictures.

As seen here on property developers roof terrace, DeepStream's Large Wood Garden Planters for Trees are very lightweight allowing the roof to support the maximum volume of planting medium while staying with in load limits so that even olive trees like this one are possible on a roof deck.
DeepStream’s Large Wood Garden Planters for Trees are very lightweight allowing the roof to support the maximum volume of planting medium while staying with in load limits so that even olive trees like this one are possible on a roof deck. The separate planter liner hides the drip irrigation system and the wiring for the lights.
Studio photo showing a 48” cube large wood planter for trees, at an oblique angle, next to it is the rugged rotomolded black LLDPE plastic tapered liner lying open and empty on its side showing the reinforcing ridges and drain holes. The planter liner fits inside the planter to hold the tree and planting medium preventing rot and improving drainage.
Our Large Wood Planters for Trees are engineered and constructed with our trademark structural anodized aluminum legs and sturdy hidden aluminum frame which holds a separate rugged plastic planter liner with advanced drainage. Since we anodize our leg extrusions there is no paint or powder coating to fail.
The President of DeepStream Designs on a tropical penthouse roof deck measuring the temperature of the outer plank on Commercial Wood Planters heated by the sun.
As shown by Sheila, the President of DeepStream Design, on a clear 80-degree day the temperature of the outside of planks on Commercial Wood Planters, or pot, can reach 124-degrees, steaming the root ball inside unless there is a thermal air gap between the wood planter box and waterproof liner as found with DeepStream’s unique liner within a wood planter box design.
Close up of measurement of solar thermal gain, 124-degrees on a sunny 80-degree day, on the outside planks of Commercial Wood Planters.
Measuring the solar thermal gain, 124-degrees on a sunny 80-degree day, on the outside planks of Commercial Wood Planters. DeepStream’s liner inside a box provides a thermal gap so the root ball stays at air temperature so that landscaping flourishes. The waterproof liner inside the planter box has advanced drainage and hides drip irrigation lines.
An oblique profile view of an unplanted 36” cube shaped Large Wood Planter for Trees showing the ¾ inch thick planks held by anodized silver aluminum legs with a black plastic food safe inner planter liner just showing as the top of the liner is recessed about 1” below the edge of the top Ipe wood plank.
The elegance of Ipe wood and our trademark structural anodized aluminum legs never fail to visually impress. However, they are only part of the reason our Large Wood Planters for Trees provide the ideal landscaping environment for plants to thrive. The structural aircraft aluminum frame and rugged plastic planter liner with advanced drainage give the system strength and longevity, preventing wood rot, hiding drip irrigation, and prevent solar gain steaming the root ball.
A studio photo showing a grouping of planter liner drain accessories including a threaded drain hose, a 90-degree threaded bulkhead drain, a valve, and a brass garden hose to NPT threaded adapter.
A studio photo looking straight down inside a square wood restaurant planter showing how the waterproof liner sits inside on a hidden structural aluminum frame
Is hard to overemphasis DeepStream’s uniquely engineered 3-component planter system importance to restaurant planter adaptability and longevity These square wooden restaurant planters show how a separate waterproof liner, supported by a hidden structural aluminum frame, prevents soil from contacting the wood and the sun from heating the root ball.

Plants simply grow better with less effort in better planter liners.

7 Wood Garden Planters create an outdoor cafe under the palms on a tropical Miami sidewalk.
Don’t confuse DeepStream’s Wood Garden Planters for carpenter-built planters you see quickly falling apart. Backed by a Lifetime Structural Warranty DeepStream wood planters are a complete 3-part system with marine anodized aluminum legs, separate planter box, and hidden structural aluminum frame engineered to hold the all important separate planter liner.
Waterproof liner and the components of DeepStream's 3-part advanced drainage filter pad.
The basic components of DeepStream’s 3-part advanced drainage filter pad: drain board, filter fabric and Biobarrier.

Click here for a Direct Link to 3Part Planter Liner Drain Packs.

A 72" long rectangular Modern commercial Mariner Wood Planter landscaped with tall flowering Birds of Paradise creates a dramatic screen wall.
Modern Mariner Wood Planters have a hidden structural aluminum frame supporting a separate waterproof liner with advanced drainage. This creates an airgap between the wood planter box and the liner preventing solar gain from heating the root ball. This gap not only ensures the best growing condition for landscaping, like these Birds of Paradise, the gap allows for a hidden drip irrigation option.
Detailed photo on a tropical roof terrace showing how easy DeepStream tapered stock planter liners with advanced drainage make it to replant and recondition roots.
DeepStream tapered stock planter liners with advanced drainage make them economical to ship and easy to replant and recondition roots.

DeepStream’s cost effective Commercial Stock Planter Liners and Custom Welded Garden Planter Liners use food safe plastic and are designed with advanced drainage options making them perfect for landscaping or container gardening:

  • Improved drainage with side wall drains and 3-part drain pads.
  • Reduce water usage.
  • Eliminate leaks.
  • Lower maintenance cost.
  • Reduce the quantity of planting medium.
  • Prevent wooden planter boxes from rotting out.
  • Prevent Solar Gain from steaming the root ball.
  • Hide drip irrigation systems and electrical wiring.
  • Catch or redirect water overflow with side wall threaded drain ports.
  • Tapered shape makes replanting slip-out-easy and saves shipping costs.
  • Less expensive, tougher, and more waterproof than fiberglass liners.

Direct link to: DeepStream Custom Welded Liners and Drip Trays

Direct link to: DeepStream 3-Part Drain Packs

If you have questions, need more information, or would like to discuss your project, please call Sheila at (305) 857-0466 or email her at dsdmiami@gmail.com.  Sheila has decades of experience to call on as a developer, general contractor, and property manager, with thousands of planter installations and remediation project experiences to help you with budget-saving ideas.  


Need important information on Selecting Planter Liners before you purchase? This blog post will help.

Planter Liner 3-Layer Drain Packs

3-Layer Planter Liner Drain Packs with Bio-Barrier are the 3rd step to improve your planter drainage.

Waterproof liner and the components of DeepStream's 3-part advanced drainage filter pad
The basic components of DeepStream’s 3-part advanced drainage filter pad: drain board, filter fabric and Biobarrier. Cost: $5

Enhance planter drainage and prevent roots from blocking drains without harming your plants.

DeepStream manufactures a 3-layer drain pack that fits inside your DeepStream planter liners over the side wall drains.  Order one pack for every drainage outlet you plan for your planter liner.

Note that while drain packs will stop planting mix from washing out the side drains of DeepStream’s planter liners they will not stop color or minerals from your water, planting medium, or mulch.

A studio photo looking straight down inside a square wood restaurant planter showing how the waterproof liner sits inside on a hidden structural aluminum frame
This square separate waterproof planter liner with a threaded side wall drain promotes excellent drainage. The waterproof liner, suspended from a hidden structural aluminum frame, also prevents the wooden planter box from rotting by keeping soil from contacting the wood. The air gap keeps the sun from heating the root ball and hides drip irrigation.
DeepStream Advanced 3-Part Planter Liner Drain-Pad shown as components and finished pad
Layer 1: TremDrain Board increases drainage surface area and efficiency with a waffle like drainage channel pattern. Layer 2: filter fabric reduces drain blockage by silt and organic material. Layer 3: Biobarrier helps prevent root blockage. Cost: $5.

Order one for every drain. $5

Filter packs with BioBarrier, when used in conjunction with clean 1-2 mm size inorganic drainage material without any clay fines, or rubber mulch mounded over the drain pack several inches thick to hold them in place, slows the flow of the water to the drain and can prevent clogged drains for a decade or more. We know from experience that BioBarrier, despite a 15-year Warranty from the manufacturer Typar will not stop aggressive root systems like runner bamboo and Calusia.

If you have questions, need more information, or would like to discuss your project, please call Sheila at (305) 857-0466 or email her at dsdmiami@gmail.com.  Sheila has decades of experience to call on as a developer, general contractor, and property manager, with thousands of planter installations and remediation project experiences to help you with budget-saving ideas.  

Advanced 3-Layer Drain Pack Components

DeepStream cuts and then hot glues the components together, so all you have to do is place a convenient BioBarrier drain pack pouch over the drain outlet and hold in place with a mound of the drainage material following the printed: Garden Planter Liner Planting Instructions.

  • The first layer is TREMDrain: a waffled plastic pad that enhances the drainage area with crush-resistant channels covered with a layer of geotextile fabric.
  • The second layer is Biobarrier root control: Considered effective for 15 years by its manufacturer, we have found that it is not effective against plants with aggressive root structures like Ficus, Bamboo, and Clusia.  Biobarrier is a geotextile fabric with permanently attached nodules of trifluralin, which are engineered to slowly release it to create a vapor zone where roots will not grow. Trifluralin is not systemic, so it’s not absorbed by plants, and there is no residual or cumulative effect on the plants an it is used on rows of food crops to prevent weeds eliminating the need for spraying and reducing carbon from tilling.  Roots that are 2″ – 4″ away from the zone are unaffected. Trifluralin has been used for more than 40 years and, with a US EPA Class IV rating of 10,000, it is considered practically non-toxic, ranking it between sugar (29,700) and salt (3,000).
  • The third layer is a geotextile fabric pouch: Encasing the Biobarrier pad, this pouch provides two more layers of filtering to the geotextile fabric pad of the Biobarrier backing and the layer of geotextile covering the TREMDrain, before excess water flows out of the liner drains.

Please note: It is critical not to crush the filter pack against the liner drain with a hard root ball, as they will make a perfect seal and prevent all drainage. Filter packs are designed to keep the planter liner drain from clogging as long as possible, a noted above, drain packs will not make drain water “clear.”


Tips for improving Planter Drainage

Drain packs must be used in conjunction with a proper planting medium for container gardening, and inorganic filtering material to slow the drainage water so that any clay “fines” that could coat the geotextile will instead settle to the bottom of the liner below the side-wall drain.

  • When selecting your outdoor planters, keep in mind that drainage is critical to the health of your plants grown in containers, and it is very difficult to remedy after the fact. The design of the planter liner is one of the important components.
  • Generally, more tended plants die from drowning than from lack of water. “Old school” drain holes on the bottom and gravel drainage medium simply do not work and will quickly clog.  DeepStream elevates the drainage hole center approximately 2″ up the sides of your liners to provide a “reservoir” for the tap roots, but more importantly, that space allows clay “fines” present in all most all planting mediums to settle instead of clogging drain packs.
  • DeepStream pioneered modern drainage practices with side-wall drains and 3-layer drain filter packs. DeepStream places from one to three 3/4″ threaded drainage ports on its 16 stock proprietary plastic planter liners, to which various plugs, hose barbs and valves may be attached.  Liners are non-structural and are meant to be placed inside planter boxes.
  • Depending on your plants, planting mixture, and local climate, you may need to add more drains.  Additional drain holes can be added as required by drilling additional holes in the side walls with a hole saw bit. If additional threaded ports are needed we stock two-part watertight bulkhead fittings.
  • Planting mediums for container gardening are as varied as local climates and plant species.  Here in Florida, we can get 6” of rain in a day in the rainy season, so we need a quick draining material and we often add perlite. If you have a dry climate, you may need to add more vermiculite to retain water.  Since Florida also has a dry season where it my not rain for a month or more at a time, we use drip irrigation, as the planting medium we use for the rainy season dries out far too quickly during the dry season.  For more in-depth information on drip irrigation, drainage, and the many aspects of container gardening check the Helpful Resource Links to planterblog.com listed at the bottom of this page.

BioBarrier System – in the manufacturers words

The BIOBARRIER System manages roots through the slow, controlled release of trifluralin, a root inhibition herbicide that has been in use on food crops in the United States for more than 35 years. A pattern of 7/16-inch-hemisphere nodules is through-injection-molded to 4-ounce-per-square-yard, durable, proven TYPAR® geotextile fabric on 1.5-inch centers. This creates a continuous zone of root control protection.

Trifluralin diffuses from the protective nodules in vapor form, creating a root inhibition zone in the soil. Roots penetrate the zone until root tips reach the herbicidal concentration that prevents that species’ root tip cell division; this is normally 3/8 inches from the fabric. Only the root tip cell’s ability to divide and grow is affected; neither the plant nor its roots are killed because trifluralin is not systemic. The BIOBARRIER System simply diverts the roots and causes the plant to concentrate growth in branch roots away from the trifluralin zone.

Click this Direct Link to the Typar-BioBarrier manufacturers website for downloads.


Need important information on Selecting Planter Liners before you purchase? This blog post will help.