Soil Testing Information for Porter County, Indiana
The Porter County Extension Office has free soil testing kits that you may pick up. Once you have collected your sample, you mail it with a check for $14.95 to Calmar Soil Testing Lab in Westerville, Ohio. We don't know how long it will take to get your results back at any given time. For that information you should call Calmar Labs directly at 800-807-6457. Purdue University has some nice informative articles on soil testing - for those, click the links below.
Soil Testing for Lawns
Here are the instructions included with our free Calmar soil testing kit:
1. Collect sample from the desired area.
A good representative sample is necessary to accurately determine the nutrient content of the soil. This significantly influences teh accuracy of the fertility recommendation.
The quantity of soil sent to the lab should be about one cup. Use a soil probe, shovel, or a hand trowel to sample ten to fifteen spots throughout the area to be tested. Turf should be sampled to a depth of 3 inches; gardens to 6 inches; landscaping, ornamental plant, or flower beds to a depth of 6 inches; production acreage for field crops 7 to 8 inches. Trees to be planted should have the soil throughout the dug hole analyzed if time allows. Established trees should have ten to fifteen spots sampled (8 inches deep) from the drip line of the foliage canopy back to the trunk of the tree. Place this collected soil into a plastic or rubber bucket. Mix the soil completely, then place approximately one cup into the soil bag. Close and fold the top of the bag down to soil level and bend the metal tabs to secure the sample for shipment.
There is more but you can read the rest once you pick up the free soil testing kit at the Porter County Extension Office in the Porter County Government Center at 155 Indiana Ave., Valparaiso, Indiana 46383. We are Suite 301 on the top floor. We are open from 8:30 am to 4:30 pm Monday through Friday.
If you would like to investigate other soil testing laboratories and see a complete set of related Purdue University links on this topic, click on the link below.
Purdue University List of Regional Soil Testing Laboratories