On 11 Sep, 19:58, Roger Tonkin wrote:
Went down the greenhouse today to pick the toms. First few I went for
were very red and slightly soft on top, lifted gently and off the stalk
they came, BUT when turned over the bottoms were blotchy
green/red/yellowish.

Some of the others were blotchy on top and fine underneath.

Any ides of the cause? I know I've had erratic watering from a neighbour
whilst I was away so there are a few with blossom end rot. Could this be
the reason?

Hoping they will ripen evenly when left on the windowsill.

Roger T

Not enought potassium/potash or too much heat.
Tomatoes need tomatoe fertilizer on a regular basis (high in potash).