1) Remove all growing grasses, plants, etc. within the new bed area.
2) Till the existing soil as DEEP as we can.
3) Add a mixed soil that is well drained and high in nutrients. This is added a few inches at a time until the new and old soils are mixed (with a tiller) equally throughout.
4) We also add lava sand (when needed) as a separate charge for extra hard, clay soils.
5) We add enough Expanded Shale to give a two inch layer throughout the bed. This shale is tilled into the soil to a depth of 8 inches or as close as we can get. Again shale is used when the budget of our client allows.
6) The bed is given a “mounded” appearance with less depth at the edges. Plants are planted at a higher height over the “old” soils below. This allows the plants to grow roots very well.
7) All beds are covered with a minimum of 3 inches of FINE shredded hardwood mulch once the planting has been completed. In cases where there will be zero plants we often mulch to a depth of 6 inches.