FREE Soil Testing and Gardening Advice at the Connecticut Flower and Garden Show, February 22 – 25, 2018 at the Connecticut Convention Center in Hartford. The University of Connecticut Soil Testing Laboratory will offer free soil pH testing each day of the show. Bring in ½ cup of soil and we will test it and let you know how much, if any, limestone you need to add for optimal plant growth. Master Gardeners and staff horticulturists from the UConn Home & Garden Education Center will be on hand to answer all of your gardening questions. Free gardening handouts will help you make the most of your lawn and gardens this year!