Wooden planters give a great natural atmosphere in your garden. You can find a range of wooden planters that are ideal in brighten up your balcony, patio or garden. Wooden planters are designed to be strong, are decorative and have a traditional appearance. Fill your wooden planters with plants and flowers for a nostalgic finish especially in an outdoor space.
The best wooden planters have a metal liner in it, normally galvanized, and it will all ready have drain holes in it.

What are the advantages?

You can buy durable and rich-looking teak planters or durable planters from cedar that have a natural resistance to rotting. The advantage of the cedar and teak planters is that they can be used without painting. Another advantage of wooden planters is that your plants have a better chance to survive through the winter because they are excellent insulators for your plants.
If you look at the porosity of wooden planters you can say that they fall between plastic planters and clay planters like terra cotta planters.

How are wooden planters treated to use for a long life?

Most of the wooden planters you buy already have been treated in some way to resist damage from the constantly exposure to sunlight, rain, heat, and cold. But what would be the best way to treat a wooden planter to make them last as long as possible?

Heat Treated Wood vs. Pressure Treated wood

Heat Treated Wood
You can find more information on heat treated wood in the following article:

Pressure Treated wood
Not all pressure treated wood are equal. There are various woods for different use, depending on what that use is for.
You can find more information on heat treated wood in the following article:
Heat treated wood

There is some good information on the classifications on pressure treated wood. The next document gives USER SPECIFICATION FOR TREATED WOOD:
AWPA-Use-Category-System-U1-07