Question: How do I prevent blossom end rot on my tomatoes?
Answer: Keep your soil evenly moist, especially during the hottest weeks. A good layer of mulch is mandatory. If the problem continues, you may need to add some calcium to your soil. Also, be sure to rotate your crops every year.
Jan Phipps is a University of Illinois Extension Master Gardener. She farms, gardens, writes and podcasts near Chrisman, Illinois.