Protesting farmer unions Friday announced they will organise dharnas at governor houses across the country on June 26 to mark the completion of seven months of their agitation against the three new Central agri-marketing laws.

The Samyukta Kisan Morcha, an umbrella body of over 40 farmer unions, said they will show black flags during their June 26 protest and send memorandums to President Ram Nath Kovind.