Grapes are first picked in early August, and the harvest season continues through late October or early November, according to the local tourism board. Flames have swept through California 's wine country , resulting in a state of emergency being announced in Humboldt and Trinity counties and in nearby areas . The rapidly spreading wildfires are threatening vineyards , marijuana crops , houses and general infrastructure . The fires have come at a crucial time for the harvest , which is part - way through harvesting this year 's grape crop .
Flames have swept through California 's wine country , resulting in a state of emergency being announced in Humboldt and Trinity counties and in nearby areas . The rapidly spreading wildfires are threatening vineyards , marijuana crops , houses and general infrastructure . The fires have come at a crucial time for the harvest , which is part - way through harvesting this year 's grape crop .