Children from St Mary Magdalene Church of England Primary School are among those selling the fruits - and veg - of their labours at Borough Market today.
Here are some pictures of them planting their seeds earlier in the year.
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The meeting was arranged in the wake of Wednesday's terrorist murder of four people in Westminster.
Dozens of women gathered on Westminster Bridge to form a human chain in a show of solidarity with the victims of Wednesday's terror attack.
In a wide-ranging Peston on Sunday interview, he said Parliament security needs reviewing and the PM's counter-terror strategy is flawed.