They should be kept moist to avoid this. I expect you've had dry then wet or
the other way around and it triggers off the plant to try and survive by
producing seed

Robert
"Steve B" wrote in message
...
: This might sound like a very basic question, but....
:
: This year I'm trying to grow some vegetables. One of the first I've
planted
: was a row of turnips. They grew fine until a about a week ago, now several
: of them have suddenly shot up to about three feet tall and have some
: 'flowers' on the top. Have these 'bolted' What should I do? All my
gardening
: books don't mention this.
:
: Pleased bear in mind that I'm a complete newcomer to this.
:
: --
: Steve
:
:
: