I am new to ponds and this is my first spring. Last summer when I completed the pond I put in some water lillies, they grew to the point that they all but covered the pond surface. They died back during the winter which I presumed was normal and when the water started warming up this spring they started putting out new shoots. The leaves are a fraction of the size that they were last summer and there are only about 1/3 of the number of leaves. Is this normal? should I do something? should I have done something last winter? If it makes a difference I am in southern california and the summer weather is generally in the high 80's up to the occasional triple didgets, but the pond temp seems to stay in the 70's. Also I do have many Koi in the pond ranging from 3 to 22 inches. I do not do well with plants and it would not supprise me that they died just knowing my reputation. A google search turned up so much conflicting advice that I do not know what to do. Anyone that actually knows and can tell me what to do would be greatly appreciated at this point.