Levington Sulphate of Ammonia – 1.5kg Ideal for restoring your soil’s natural nitrogen levels, this supplement mix can be used all over your garden to promote strong and healthy green leaves and cures leaf yellowing which is caused by nitrogen deficiency. Not quite what you are looking for? Browse our full range of All-Purpose Plant Care. | Levington Sulphate of Ammonia, Size 1.5kg | Charlies