Hello! My tomato plant leaves are turning yellow. I have read a lot online regarding what to do about this problem. There is a lot of fruit on the plants. One of the plants has blossom end rot. This is the first year that we planted a garden. We have raised garden boxes and bought "good" soil. Should I have a soil test done? If so, how do I go about doing this? Thank you so much, Barbara A
We do recommend that you test your soil. The following page has information on the benefits of soil testing and how to take a sample. https://extension.umd.edu/hgic/soils/soil-testing
Here is a list of regional soil testing labs to which you can send your sample. For a vegetable garden, we recommend testing for lead as well. (The University of Delaware test includes an analysis for lead content.) The basic soil test will tell you the pH, nutrient content, and organic matter in your soil.
Blossom end rot is a nutritional disorder caused by a lack of calcium. Often this can occur if the plants are not getting enough water (to take up available calcium). Here is more information about blossom end rot and what you can do.