Westland Sulphate of Ammonia is a high nitrogen, fast-acting plant food, which is perfect for giving green crops a quick boost of growth. It rapidly cures crop yellowing.Quick acting fertiliser boosting nitrogen levels in vegetable beds, garden borders & lawns.Ideal for promoting lush healthy leaf growth particularly beneficial for vegetable and salad crops such as brassicas, lettuce, spinach, rhubarb and leek.