Posted: 18/06/2017 at 10:06
Some varieties seem more prone to it than others ... it's a reaction to inconsistent amounts of watering ... I find it best to allow the compost to dry out and then give it a really good soak, as advocated by Italophile on this forum a few years back.
I only water when the leaves begin to flag - I sometimes only water my toms twice a week.
I have over 20 outdoor tomato plants in pots most years and only rarely are any fruit affected by BER.
It's not something that will spread from plant to plant.
Last edited: 18 June 2017 10:07:20