I have given some advisement to several around Coffinswode. With the northern farm salted, your best chance at recovering, is to dig out the salted soil, burn the ground beneath, as fire will renew and burn away impurities, then gather new soil and replace it. This will prevent spreading of the salted soil contaminating further parts of Coffinswode.
OisÃn Silvermane - Farmgirl and Cook.