From their site:
At TFC quality is our standard – we take great care in every step of the growing process to ensure that we offer the most consistent products available. Located in the glacier-formed basin of Nederland, Colorado, our high-efficiency, low-waste facility allows us to provide our customers with ethically produced soil-grown cannabis year-round. We believe that using soil creates more flavor in the flower, and as such we focus on soil’s relationship to terpene content. With the same detailed attention paid to our clones, bubble hash and seeds, we are proud to help define craft cannabis.