Norcal Ag Service has the best organic farm supplies in Northern and Central California area since 2010! Norcal Ag Service provides organic farm supplies like compost, chicken and cow manure, gypsum, limestone, organic fertilizers, micorrhizal & road dust control and other soil stabilization services to all of central and northern California communities, including Napa, Sonoma, Healdsburg, Stockton, Modesto, Sacramento, Yuba City, Lodi, & Livermore. Norcal Ag Service wants their clients to all know that their mission as a company is to work with local growers to find products and identify methodology that increase soil health and fertility while at the same time protecting the watershed. So much damage has been done by the over use of synthetic fertilizers that it truly is time to go back to natural farming practices.