Tomatoes black at base

[Amberlilly]

Any idea why my plum tomatoes have gone black underneath, like a spot? They are in the greenhouse, my outdoor cherries are fine.

[Ruud]

blossom end rot , loads off threads here about it

[Strawberry delight]

Yeah blossom end rot, here is somthing about it;
Blossom End Rot in Tomatoes by Richard Bailey of the National Vegetable Society

There is no cure but this should help for next year!

[Florence Fennel]

It is blossom end rot and I think the major cause is erratic watering. Some of mine got it because they kept blowing over so I kept having to water them to weigh them down and I think I overdid it! Better luck next time.

[Ruud]

It is blossom end rot and I think the major cause is erratic watering. Some of mine got it because they kept blowing over so I kept having to water them to weigh them down and I think I overdid it! Better luck next time.

im sure there was better ways of weighing them down other then watering

[Tomatoking]

Just a thought!

If they are so light they are blowing away they could not have enough water and that is the major cause of blossom end rot.

[blito]

I`ve had this problem on my moneymakers in my greenhouse.. i let them get too dry whilst the first fruits were developing... Having said that, let the fruit ripen and just cut out the bad bits when you come to use them.. the rest of the tomato is perfectly usable!.