In most cases, cedar wood is the best wood for flower beds because cedar wood is naturally rot-proof. Redwood is another excellent root resistant tree, but redwood is a more limited resource.
Both sequoia and cedar wood contain natural tannin (a chemical that gives products their color), which makes the wood resistant to insects. Because California redwood has a higher tannin content, it can be more resistant to decay than cedar.
While cedar and redwood are strong and durable, redwood is denser and more weather resistant and will split over time. Cedar fences require a high level of maintenance. If you want to change the paint color very often, cedar wood is the best choice for you.
Wood alternatives to raised planters
- Sequoia or Robinia - Definitely the best option for raised planters in terms of longevity as they are naturally root resistant and are known to last up to 20 years.
- Cedar - Another solid root tree, cedar can last 1015 years and looks great.
from 10 to 20 years
Redwood is a harder wood than cedar. Since it is a harder type of wood, it will last longer and be more durable. Redwood contains more natural chemicals than cedar. This protects the tree and reduces the need for maintenance over time.
Redwood usually costs a lot more than cedar, especially redwood. Although hardware stores often have similarly priced cedar and redwood products, the buyer needs to know if the redwood product contains large amounts of sapwood.
Commercially available naturally resilient woods include black locust (Robinia pseudoacacia), teak (Tectona grandis), Ipe (Tabebuia spp.), California wood (Sequoia sempervirens) and bark cypress (Taxodium distichum). These have the greatest resistance to rot over time.
Redwood is expensive, especially since it is only found in an area along the California coast. However, there are some circumstances that make redwood the most attractive option regardless of the cost. Giant sequoias are found on the Northern California coast.
Cedar projects typically last over 20 years without cracking, rot, or twisting. White oak and teak are also durable woods that can resist rotting, twisting, cracking or twisting.
They typically last around 15 years, but with proper care you can extend the life of your wood to 20 years or more.
You can tie up the raised bed to make it more resilient and prevent toxins from entering the soil. Use landscaping materials available at garden stores or cloth rags from clothes for lining. Avoid non-porous plastic as it can absorb too much water and scare off beneficial insects and worms.
Optimal size for raised beds
For example, if you are 5 feet long, 4 feet wide, and 2 feet deep, the volume is 40 cubic feet (5 x 4 x 2 = 40). This is the amount of soil needed to fill the raised planter. This is the equivalent of 20 bags of soil sold in bags of 2 cubic feet of soil each.
Raised beds are the ultimate in gardening. Since you’re literally building a bed from scratch, you don’t have to dig into the ground to remove lawn and weeds. Instead, put a thick layer of newspaper on top to kill the weed and place soil and other supplements on top of it.
Yes, you can use treated wood for your plant raised beds. The fungicide prevents soil fungi from attacking the wood and is effective against insects, including termites. Copper is also a commonly used fungicide for food crops by consumers to grow vegetables and is a disinfectant in swimming pool chemicals.