A year ago i Planted an Avacado seed in soil, it produced a seedling. This seedling has been in the ground for about a year in a half. When we had a bed frost I covered my little tree to protect it but I guess it wasn't good enough. It did recieve some frost bite on the leaves. I waited for the middle of March befor I cut back any of the damaged leaves. Now I have noticed that the areas where I trimmed have turned BLACK, the leaves are turning black on the ends, the parts of the branches that were left are turning black as well. Someone Please Help! the plant is either a Hass or Florida Avacado.