EcoFlower Subscription Box Coupon: 50% Off Today ONLY! Posted by Hello Subscription on April 21, 2017. Subscription Box Coupons & Deals / EcoFlower Subscription Box Coupons Make the first comment! Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for LaterGo to commentsNotification Today ONLY save 50% on your first Ecoflower box with coupon code SUBBOX50! FYI – although sometimes they have other sizes available, today it looks like the $29.99 box is up!