This coupon has expired $10.00 for Back to the Roots Organic Mushroom Grow Kit. Offer available at Walmart, Walmart Grocery. expires on 05/22/20 Other coupons you may be interested in $1.00 for Jarritos (expiring on Monday, 01/02/2023). Offer available at multiple stores. $1.00 for Sangria Senorial (expiring on Monday, 01/02/2023). Offer available at multiple stores.