Fresh herbs and using herbs with mold sensitivity

I've had a lot of mold exposure n am sensitive to mold. What can I do for fresher herbal remedies. I am resorting to essential oils only now, and the refrigerated seasoning herbs, or the seasoning plant itself, until I can find fresher. Many herbs sold in america have a long shelflife, been sitting there too long collecting invisible mold, n are often old, when the plant would expire in just days. Any suggestions? Tweet