The Victorian Greens will overhaul the way the party vets candidates and handles misconduct allegations, after a year beset by scandals and disappointing election results.

It comes as another Green walks away, with former Darebin mayor Kim Le Cerf resigning over the party's handling of bullying allegations raised in the lead up to the Batman byelection.

Her departure marks a dramatic collapse in the branch's fortunes —12 months ago Darebin was the biggest Greens branch in the country, with a Greens local mayor, a Greens state MP in Lidia Thorpe, and hopes for a federal MP in the once-safe Labor seat of Batman (now called Cooper).

Since then, external members have been brought in to help run the Darebin branch, Labor's Kat Theophanous wrested Northcote from Ms Thorpe in the November state election, and the fallout continues from the toxic Batman byelection.

Cr Le Cerf, who will now sit as an independent councillor at Darebin, refused to publicly discuss her resignation from the party.