Free Monthly Soil Testing
During (Free) First Saturdays at the Botanical Center in Roger Williams Park
We’re excited to partner with URI’s Master Gardener program to provide free pH testing again this season. Testing your soil is a good way to learn more about the dirt under your feet. Healthier soil means healthier plants, which you really want to focus on when planting fruit and vegetable gardens. (We’re looking at you community garden plots!) In city environments, it’s especially important to know whether you have toxins in your yard before planting anything edible. High toxin levels are fairly common in our neighborhoods due to Providence’s industrial history, but we can work together to improve soil health!
To collect your soil sample:
- Get a small clean shovel and a container.
- Determine the area you want to test. Dig at least 6 inches down and place soil in your bag.
- Collect soil from several spots and mix it all together.
- Dry the soil sample. Spread the soil out on newspaper or a paper plate.
- Remove any stones, roots, and other debris.
- Finally, put about one (1) cup of the dry, mixed soil into a clean plastic or paper bag. Label it so you know where it came from!
- Bring it in. We’ll test the pH on site, evaluate texture, and give you recommendations to improve it.
2026 Soil Testing Schedule at the Botanical Center:
*Every (Free) First Saturday from 10am-1pm. Admission is free for Providence Residents every first Saturday of the month. Soil testing season at the Botanical Center takes place March through October. *No Soil Testing in July or August
Dates: March 7, April 4, May 2, June 6, September 5, October 3
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