Sojourn Winery's proprietor Craig Haserot's response when I asked him if they had any organically grown grapes in their wines:
"No it's just a way to have to pay a lot of money to not use Roundup."
In a nutshell.
Presumably Haserot doesn't spend a lot of time himself in the vineyard using Roundup. Let's hope.
Yet another of life's little ironies is that one of the vineyards they make a single vineyard-designated wine from - Rodgers Creek - is, in fact, organically certified.