Tomatoes - Blossom end rot

An earlier thread suggested that once your toms get BER, that's it and there's nothing you can do. But how does one stop it occurring in the first place?

 

Someone on the GQT panel mentioned that it was an issue with calcium uptake.

 

Blossom end rot is indeed caused by lack of calcium, keeping the soil
or compost moist at all times reduces it considerably, I found only two
affected fruits on my plants this year.

Pete

 

Proper watering is the key.

Most soils / composts should have enough calcium, especially if you are feeding, but the plants can't take it up if they are being watered too much, too little, or irregularly.

 

Thanks both - is there a calcium additive one could apply (as well as keeping the soil moist) (I should have said I grow in pots in a greenhouse).

 

I'm not sure plant feeds contain calcium.

I'd just add some lime to the watering can for one time only.

 

You can get foliar calcium feeds for a quick fix, I believe? Or did I imagine that?

I never bother. Water properly, and it's never a problem!

 

It depends what you're growing them in, I always found it a problem in grow bags, you cant water them properly and the roots tend to cook.

True its not ideal to be adding lime at this late stage, but it might help.