Soil Testing Service
King Conservation District has a free soil sampling program for anyone living within King County. This program covers everything from pastures, to yards, to vegetable gardens. Each landowner is eligible for 5 free samples. We are able to test the soil for the major nutrients N-P-K, pH, organic matter, and other micronutrients. The lab will send back recommendations specific to your plant needs. We do not currently pay for testing of heavy metals or contaminants; please contact the office for questions on where to send those samples..
Soil samples collected as part of this service will be sent to a certified lab to test pH (soil and buffered), nitrate, phosphate, extractable cations (potassium, magnesium, calcium, sodium), organic matter, and cation exchange capacity. Additional tests are available at a fee. The soil testing results are generally available within two to three weeks.
We encourage residents to gather their own soil samples and bring them to our office for processing. Please visit our Soil Sampling Instructions for details.
**Note: This service is available to all landowners within the District boundaries. Landowners who live within the city limits of Enumclaw, Federal Way, Skykomish, Milton and Pacific are outside the District boundaries and are unable to take advantage of this program. Residents in those cities who are interested in King CD services should contact their local elected official about the benefits of joining the Conservation District.
For more information, contact Jay Mirro,
(425) 282-1905
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