Humboldt County Soil Data
Humboldt County, California
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Humboldt County, California
Rugged Coastline Characteristics
Humboldt County’s specific soil pH and taxonomic details are not available in this dataset. Without this data, we cannot compare the county to the state average pH of 6.34. Coastal environments often have unique chemical profiles due to salt spray and high rainfall.
Unknown Physical Structure
Measurements for sand, silt, and clay are missing for the county's diverse landscapes. These components determine if your soil behaves like a sponge or a drainpipe. Knowing your texture is vital for choosing the right irrigation system.
Fertility Beyond the Redwoods
Local organic matter and water capacity stats are currently unrecorded. This makes it hard to see how Humboldt stacks up against the 3.30% state organic matter average. Enriching your soil with local forest compost is a great way to boost health.
Coastal Water Movement
Dominant drainage classes and hydrologic groups are unavailable for this region. In a rainy coastal climate, knowing how water moves through your soil is essential for preventing root rot. Always check your site's drainage before planting large trees.
Berries and Greens Galore
Hardiness Zone 9b is excellent for berries, leafy greens, and ornamental flowers. The cool coastal air creates a unique niche for plants that dislike the valley heat. Get your hands in the dirt and start a cool-season garden today.
Soil Composition
Composition data not available for this county.
Soil pH
pH data not available for this county.
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Unknown
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
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Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Humboldt County have?
Humboldt County's soil is classified as Unknown. This indicates the relative proportions of sand, silt, and clay — sand percentage unavailable, silt percentage unavailable, and clay percentage unavailable. Sandy soils drain quickly but may need more frequent irrigation and fertilization.
Is Humboldt County's soil acidic or alkaline?
pH data is not available for Humboldt County.
What is the drainage class for Humboldt County?
Drainage class data is not currently available for Humboldt County.
What crops or plants grow well in Humboldt County's soil?
Based on Humboldt County's Unknown texture, soil pH, and drainage class, the soil is well suited for a variety of crops depending on local conditions.
What USDA soil order is found in Humboldt County?
The dominant USDA soil order for Humboldt County is not currently available in our dataset.
Soil & Planting Advisory: Humboldt County
Soil Verdict
Humboldt County is in USDA hardiness zone 9b, a warm climate zone. where winter lows can reach 25°F. Warm winters keep soil biology active nearly year-round, accelerating decomposition but increasing pest and disease pressure in topsoil.
Planting Guidance
Tropical and subtropical plants are viable. Year-round gardening is possible, though summer heat may limit some cool-season crops. Frost is rare; tender plants can overwinter with minimal protection. Always match plant selections to the specific microclimate of your property — low spots, slopes, and wind exposure can shift effective hardiness by half a zone.
Soil Implications
Rapid organic matter turnover means soils can become nutrient-poor quickly; test annually and fertilize based on results. High soil temperatures favor certain soilborne pathogens; practice crop rotation and avoid overwatering.
Regional Context
Humboldt County closely matches the California average hardiness conditions. The zone range of 9a-9b within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Humboldt County on LawnByCounty.com →
Other Counties in California
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.