It seems that this year has been a particularly bad year for Blossom End Rot. This is a disease that seems to have no real preventative treatment. Several web sites say the cause is related to uneven watering and calcium uptake by the plant, and that tomatoes like to have a rather constant, even water supply.
Cornell University, Vegetable MD Online, says this: Factors that influence the uptake of water and calcium by the plant have an effect on the incidence and severity of blossom end rot. Vegetable MD Online then goes on to say: Although differences exist among varieties with respect to susceptibility to blossom end rot, no varieties, as yet, have commercially useful resistance. Read the whole article by following this link: http://vegetablemdonline.ppath.cornell.edu/factsheets/Tomato_BlossRt.htm
The pictures below are from member Carol F. with a little story below
Rolling Meadows Garden Club
Encourage the knowledge and love of gardening through educational meetings and field trips. Contribute to the community through civic beautification, awards and annual events.
The first one has Bobo hydrangeas, coneflowers, Rudbeckia, various hostas, Astilbe and ferns. The second one is a 3 year old arborvitae that I started growing as a Seedling. The third pic is one-year-old arborvitaes and Juniper that I found growing in the yard last year. The 4th is Coleus in a planter. The fifth is a Swallowtail butterfly on coneflower. In the last one is a huge marigold. I don't usually like to plant Marigolds but this one was a freebie and I'm pleasantly surprised. The blooms are huge and very showy.
Left is the label of a product Chuck has tried.
The pictures below are from member Chuck's garden