Happy Frog Fruit and Flower Fertilizer Happy Frog Fruit & Flower Fertilizer is specifically designed to supply phosphorus for fruit and flower development. Also contains nitrogen essential to support growth through the end of the growing season. Mycorrhizal fungi are included to help increase root efficiency, which may enhance nutrient uptake and water absorption. OMRI Listed. Packed in a resealable plastic bag. Description: You are purchasing a 4-Lb. bag of Happy Frog Fruit and Flower 4-9-3 formula. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.