Erin Patterson's conviction for the deaths by poisoning of her estranged husband's relatives has prompted fevered speculation across Australia about her motive.

The jury in the Supreme Court trial in Victoria state returned a verdict after six days of deliberations, following a nine-week trial that gripped Australia.

Driving off the south Gippsland Highway in regional Victoria, the road carves a path through the vast green pastures, hidden under a layer of lifting fog.Different shades of green mingle in the landscape while animals graze on the short grass.