Wild Thyme Farm Forest Stewardship Plan




 1. Cover Page
 2. Table of Contents
 3. Objectives
 4. Property
5. Resources
 5.1 Forest Health
 5.2 Soils
 5.3 Water Resource
 5.4 Timber
 5.5 Wildlife
 5.6 Forest Grazing
 5.7 Aesthetics and
 5.8 Forest Products
 6. 10-Year Plan

Forest Stewardship Plan
5.2 Soils (Soil Type Map)

Resource Description

The US Department of Agriculture in conjunction with the State of Washington has published a soil survey for Gray’s Harbor, Pacific County, and Wahkiakum, Washington. The following are soil types present on the Wild Thyme farm property.

Buckpeat Silt Loam 30 to 65 percent slope
Buckpeat silt loam is composed of siltstone and sandstone and is characteristic of upland slumps. The nutrient status of this soil is fair to good. The permeability and water capacity of this Buckpeat type is moderate, but the draining capability is good. Erosion is unlikely except in unusual situations. Cuts and fills will erode if vegetation cover is not established. The primary limitation of this soil type is its steepness, which limits road use in winter months.

Douglas fir (Pseudotsuga menziesii) is the primary vegetative species, however natural reseeding is not usually viable and Douglas fir must be planted by hand to avoid canopy dominance by red alder (Alnus rubra). The CMAI for Douglas fir at age 60 is 187 cubic feet per acre per year.

Centralia Loam 8 to 30 percent slope
Centralia Loam is comprised of sandstone and is characteristic of the back-slopes of uplands. It is deep and well drained with moderate permeability. Water runoff is slow and the hazard of erosion by water is minimal. This soil type can become extremely muddy during the winter months. Cuts and fills will erode if vegetation cover is not established.

The reseeding tendencies of this soil type are similar to that of the Buckpeat Silt Loam. The CMAI for Douglas fir at age 60 is 191 cubic feet per acre per year.

Chehalis Silt Loam 0 to 3 percent slope
The Chehalis silt loam is formed in alluvium and characteristic of floodplains. It is deep and well drained with moderate permeability and slow runoff. The soil is limited by its muddiness and tendency to soften under equipment.

The primary land use practice on this soil types is agriculture, however timber can be cultivated as well. It shares the same reseeding limitations as the other two soil types.

Soil Characteristics/ Operational Considerations

All soil types on the property limit vehicular traffic in the wet season due to their tendency to yield under weight. I recommend that the landowner continue to keep the roads closed during the winter. If there becomes a need to open the roads during the wet season I recommend they be filled if this becomes economically viable through the SIP program. If a fir overstory is desired, care should be taken to keep primary successional species and brush from overtaking newly planted seedlings in both the Buckpeat and Centralia loam.

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