As part of our Food, Farms, and Factories project, join DCR staff, the Friends of the Center, and Western MA Master Gardeners to learn about soils and soil testing, including family-friendly activities. The Great Falls Farmers Market is located between 6th and 7th streets along Avenue A at Peskeompskut Park. Bring your soil to be tested for free by following these directions:

Testing Your Soil’s pH
What is pH?
• pH is a measure of the acidity of the soil.
• The pH scale runs from 1 to 14 where: pH< 7 is acidic, pH = 7 neutral, pH > 7 is basic

Why do I need to test my soil’s pH?
• Nutrients and acidity can change with time and use.
• Acidity controls the availability of nutrients and beneficial organisms.
• Plants have different pH requirements:
Blueberries and rhododendron need acidic soil, pH 4.5 to 5.5.
Vegetables grow best in pH 6.0 to 7.0.
• Lime or sulfur may be needed to correct pH imbalance.

Where can I have my soil tested?
• pH only: Master Gardener table at local farmers markets and fairs ($2.00/ donation).
See website for days and times: http://wmmga.org
• Full Soil Analysis: UMass Soil Testing Laboratory.
For details go to: http://soiltest.umass.edu

When is the best time to test?
• At least 6-8 weeks after a lime, sulfur, or fertilizer application.
• Best: Fall, Second best: Early Spring.
• Any time when starting new planting area.

What do I need to collect a soil sample?
• Trowel, shovel or sampling tube
• Bucket
• Coarse sieve or screen
• Drying tray or plate
• Zip-lock bag

How do I collect samples?
• Define your sample area. If sampling multiple areas, keep samples separated by area.
• Remove a thin slice or plug of soil from surface to proper depth.
Sample depths: 3”-4” Lawn, 6”-8” flower/vegetable garden, 10”-12” trees/shrubs
• Collect 4 -6 samples for small area, 8-12 for large.
• Mix single area’s samples together in bucket.
• Scoop 1 cup mixed soil and spread on a clean plate/tray to dry.
• Sift to remove debris and place in a labeled zip-lock bag.
• Note approximate size and type of area (vegetable, flower, lawn, shrub) on bag.
• Avoid sampling when very wet.