Developed exclusively for High Country Gardens, this brand new, all natural "winterizing" formula is ideal for fall fertilizing of trees, shrubs, roses and perennials. With boosted levels of phosphorous, potassium and the addition of granular humate, Yum Yum Mix 'Winterizer' is an incredible soil conditioner. Mixed into the soil during fall planting or scratched into the soil around established plants, it will nourish the soil's beneficial organisms and earthworms and greatly improve nutrient availability during the very active phase of fall root growth. 25lb bag. Apply at the rate of 4 lbs. per 100 sq. ft. when digging new beds or top-dressing existing plantings.