Hey,

Buy a cheap soil tester. They are usually $10-15 USD in the US. They can test potassium, phosphorus, soil acidity/alkalinity. This will give you an idea of your soil to help you rule out things.
untilbroke Reviewed by untilbroke on . Unknown leaf problem - BROWN and crispy (pics) I have 4 plants outdoors, which have just gone into flowering as of a few days to a week ago all with varied problems... My first thought was it must have been from giving too much fertiliser, but soon realised it couldnt be; because all plants are varied in the number of leaves that are 'sick' and I have been giving them all the same recommended doses, and the fact that I havn't given them any fertiliser for about a week and a half and they've only been getting worse recently. Could Rating: 5