Joining the nation-wide weekend of action, our community groups will plant hops at five energy gardens: Finchley Road & Frognal, Brondesbury Park, Hampstead Heath, Crouch Hill, Kew Gardens and Brockley.Joining the nation-wide weekend of action, our community groups will plant hops at five energy gardens: Finchley Road & Frognal, Brondesbury Park, Hampstead Heath, Crouch Hill, Kew Gardens and Brockley.