What Are the Most Weather Resistant Wood Stakes?

Cedar and Redwood

• Outdoor decks, fences and other wood structures last longest when built from cedar and redwood. The heartwood of these trees are water and disease resistant. The outer wood is less resistant than the interior portions of the tree, but even this less resistant wood is stronger and resists weather better than pine or oak. Stakes made from cedar and redwood last longer than other stakes. Be aware, however, that direct contact with moist earth reduces the wood's weather resistance. Applying oil based stains and sealants helps lengthen the life of all types of wooden stakes.

Treated Wood

• Some outdoor wood has been treated with chromated copper and other chemicals. Pressure and chemical treated wood withstands rain, fungus, bacteria and other vectors of degradation better than untreated wood. This type of wood ceased production in 2003 because its chemical treatments leached arsenic into soil. No longer produced commercially, the wood is still available at salvage yards. Stakes produced from wood treated with pressurizing techniques, chromated copper and herbicides are not suited for gardens. Vegetable gardens, especially, may become compromised by the presence of chemically treated wood. It is acceptable to make use of treated wood in ornamental gardens or for landscape purposes other than those related to growing plants.

Stains and Sealants

• Redwood and cedar stakes are often more expensive than alternative woods such as pine or oak, making it more economical to purchase pine or oak wood stakes and then coat the stakes with sealant or stains. Oil-based stains work well at sealing out moisture. This is especially important for stakes that are driven into the ground. Use caution when applying stains or sealants as the chemicals from these products may contaminate soil or growing plants. Wood stakes should be coated with a semi-transparent oil based stain once every two years.

Alternative Materials

• Most wooden stakes, even those coated with sealant or made from durable, high quality wood, will eventually deteriorate after years in a moist, well-fertilized garden. Permanent stakes, such as those made of rebar or synthetic wood, are other options.