Hi-Yield (32145) Muriate of Potash 0-0-60 (4 lbs.) Muriatic of potash. An excellent source of potassium, which aids plants in forming healthy stems, roots tuber growth. Great for below ground forming vegetables such as potatoes, carrots others. Application rate: 1/2 lb to 100 sq' (Square foot). Features This Potassium plant supplement helps plants form healthier stems, roots and tubers. Great for tulips, carrots, potatoes, and other rooting subterranean plants. Do not apply this product directly to roots. Mix into soil and water thoroughly. 4 pounds of Muriate of Potash can be used to treat 800 square feet of ground. Apply at a rate of .5 pounds per 100 square feet of soil. USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.