You might check with the American Organic Hops Grower Assoc. It doesn't look like anyone on their published members list is selling to homebrewers, but they may have some other leads as well. http://www.usorganichops.com/AOHGA/
Or check with the Washington State University - Organic Hop Research Program. It may be a longer shot but they may have some leads.
There is a vendor on eBay last.laugh that is claiming to sell organic hops, mostly whole cone. Though prices are high (as you would expect), some sales currently to make room for 2020 stock.