We are told that it takes a zillion years for plastic to decompose or more accurately a 1000 years, plastic bags around 10 to 20 years. Plastic liners are somewhere around that. It will take longer to decompose then plastic bags but won’t last 1000 years. More likely, the plastic will become torn while digging in the dirt before it decomposes. But till then, it’s a very affordable liner. Plastic is the only material that is not permeable. So it will not leach out water into the wooden planter causing it to rot. If you use a metal planter, it may rust due to the moisture. Plastic is also very durable and will last a long time in your planter box.

Liners are the Best Way to Prevent Planters From Rotting Liners are the Best Way to Prevent Planters From Rotting

provide room for water to pool away for the roots. Cover with landscape fabric to prevent soil from filling up the gaps, then cover with soil. Creating a I recommend coating the outside of the planter box with a paint or sealer that will protect it. You can apply a coat and let it stay for a day. Then apply a second coat. Apply the sealer inside the drainage holes as well. If you put the potting soil in a wooden planter and keep watering it, the moisture will decay the wood. You may need to replace the planter box every year if that happens. Hi. I'm Kevin, gardener, author, and content creator. I'm certified in Home Horticulture and Organic Gardening from Oregon State University.I would recommend that you use a liner when your planter box is made of organic material like wood. The material will degrade over time. But moisture from the soil will speed up the process. You will use a plastic liner but moisture can still seep between the planter box liner and the planter liner material. The waterproofing liquid will ensure that moisture does not harm the planter box. You should first clean the planter box well before using the liner. Mix 1 part bleach with 9 parts water in a sprayer. Oahu Modern Commercial Recycling and Trash Bins – Oahu Custom Combined Recycling and Trash Receptacle – Oahu Modern Wood Recycling and Trash Bin

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talk about some, but these are about design and material of liner. The Most Economical Planter Liner You'll find useful information here whether you're growing vegetables in an apartment, patio, or a raised bed.

You can also use a plastic pot to grow the plant and place the pot inside your planter box. You’ll still need to line the planter box with plastic. This helps protect the planter material from the water that drains out of the plastic pot. Plastic containers I bought for plants Adding a planter liner to the planter box will help increase it’s life and keep it functional for a longer time.