Re the brown wilt on tomato leaves, this happens in coastal Qld with most varieties of tomatoes except the smaller ones as Nioka says. It doesn't seem to affect either the quantity or quality of the fruit.
Does anyone have a cure for those little green grasshoppers? They are turning my beautiful basil into just stalks by literally shredding the leaves.
Put some fine chicken mesh over the plants so nothing can get in, also pellets around the herbs so snails and that dont eat them. Other than that ask the garden people where you bought your stuff what to do.
Im having troubles with birds eating my stuff, especially indian mynas. I shoot them but they still keep coming back.