A CANNABIS factory in Brookmans Park, near Potters Bar, was raided by police last week.
Acting on information from the public, Hatfield Safer Neighbourhood Team discovered the drugs den in Oaklands Avenue on Wednesday.
Plants with an estimated street value of around £80,000, which filled three sheds in the back garden, were seized.
A 60-year-old man from Brookmans Park and a 31-year-old man from Brogborough, in Bedfordshire, were arrested on suspicion of the production of cannabis.
Both men have been released on police bail until April 14.
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