We have a large number of Lilies around our yeard and we are noticing some spots and a white fuzz growing on the leaves, my father heard something about water and bakeing soda I said water and vinigar to spray on the leaves. Are either of these right or is it something else?

I've always use 1 part dish detergent to 3 parts room temp water. Works every time for me.Never tried anything didderent, so don't know if your dad or you are correct

I think that you will find some information on the following site to be helpful to you. The information concerning your particular problem is near the bottom 1/3 of the page.

Lily Diseases

Your particular problem may be the following:

Botrytis only attacks the surface of the plant and can spread to other surfaces or neighbouring plants as spores develop. Moisture is essential to the spread of the fungi so careful watering practices should be observed. It is better to use soaker hoses is better than a top sprinkler type watering system. Good air circulation is also important to dry the leaves quickly after watering or rain. Try not to get the leaves or the flowers wet. Keep an eye open for infected leaves and remove them in the morning when they are still wet. This will stop or in the least inhibit the spread of the fungi. Warm dry sunny weather helps to control the fungi.