Learn why soil pH is the most important soil test value and how it affects nutrient availability and lime requirements.

Before applying fertilizer or any other soil amendment, it's a good idea to see what the soil already contains. That way you ...

As a gardener and crop producer, we are always curious about how to improve soil in our garden. Before talking about soil improvement, let's talk about soil. Soil is the most important resource for ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Colleen Hagerty Colleen Hagerty is a writer focused on emergency preparedness.

Discover why you should test your soil in January, with insights from a garden expert. Get ahead of the growing season by ...

Testing for toxic chemicals and heavy metals is available in Los Angeles County from philanthropic groups, researchers, and ...

Wildfire survivors across Los Angeles County are discovering that the most dangerous consequence from a wildfire isn’t always visible. Lead, arsenic, and other toxic metals could be hiding deep in ...

To inform those living within and around the Palisades and Eaton Fire zones – a Los Angeles-based organization is leading the effort to sample the soil at more than a thousand properties. The ...

Representative soil sample testing done in a Los Angeles County Public Health study found a higher percentage of samples with lead levels above health-based screening thresholds taken from parcels ...