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01

CONTAINER LONGEVITY

HOW LONG WILL THE PLANTED CONTAINERS LAST?

At Western, we produce an array of molded fiber greenhouse and nursery containers with different and partially overlapping life expectancies to meet our customers’ diverse growing needs. We do this by adjusting the mix of recycled paper, proprietary additives and/or addition of a partial or full wax impregnation of the container.

Nursery containers growing on ground cover in a greenhouse.

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02

DESIGNED TO DECOMPOSE

DESIGNED TO BREAK DOWN

One thing all of Western’s molded fiber horticulture containers have in common is that they are made with recycled paper and will eventually decompose. The longevity of Western containers is determined by many environmental factors that can affect the container’s life in both positive and negative ways. It’s worth noting that most “best horticulture practices” will also contribute to the longevity of our containers.

Factors affecting the breakdown and decomposition of Western’s containers 

The wood decay organisms that break down and decompose molded fiber containers are naturally present in the environment, and in particular, are often found in soil, bark, and other organic matter. The life expectancy of Western’s nursery containers will largely depend on horticultural practices and external factors that encourage the growth of those wood-decay organisms, including: 

  • Irrigation type: Excessive irrigation situations, flood tables, and sitting in puddles should all be avoided. 

  • Substrate underneath the Container: Containers on coarse gravel, benches, or ground cover fabric with good drainage will last longer than those in direct contact with the earth.

  • Air Circulation: Generally speaking, good air circulation increases the service life of the container.

  • Soil Composition and Fertility: Avoid using high-nitrogen fertilizers, forest products, soil supplements, or biologicals that might also stimulate the breakdown of organic matter.  Use of these products may shorten the lifespan of Western’s containers.

  • Waxing of Containers: Select Western containers are sold as fully waxed-permeated or have a waxed rim and base. The addition of wax increases the service life and adds durability and strength to our containers. A wax barrier bottom can be applied to our unwaxed horticulture containers for a modest charge.

  • Burying the pot in the soil: The same factors necessary to break down organic matter are essential to decompose Western horticultural containers. Soil temperature, moisture, fertility, and microbial activity all influence how quickly Western horticulture containers will decompose in the soil.   

Proper Storage of Western’s Products

Western recommends that unused containers be stored in an area protected from weather and direct sunlight. If outside storage is necessary, they should be stored covered and not in direct contact with the soil.  Inventory should be rotated to use older stock first.

Nursery containers utilizing wire cages planted with tomatoes placed on a gravel surface.

5025 SW Hout Street | Corvallis, OR  97333 | info@westernpulp.com | Tel: 541-757-1151 | Fax: 541-757-8613

© 2023 by Western Pulp Products Company

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