USDA Organic. Certified Organic by Quality Assurance International. Non-GMO. Organic Means: non GMO; no persistent pesticides; no antibiotics; no added hormones (No significant difference has been shown between milk from rBST-treated & non rBST-treated cows). From pasture-raised (Per National organic program regulations) cows. Organic makes all the difference. Our family farmers believe our organic butter is perfect the way it is. It’s slow-churned sweet cream made without GMOs. Even our cows eat organic. The color of our organic butter may vary seasonally, as we do not add color. horizon.com. Facebook. Twitter. We'd love to hear from you! 1-888-494-3020 or visit horizon.com. More organic goodness! Horizon Organic Mozzarella String Cheese. Horizon Organic Mexican Shredded Cheese. Horizon Organic Cultured Sour Cream.