Two years ago, I planted Elderberry trees in my front lawn. These trees look like the Elderberry trees that I remember from my childhood that grew in shaded woodland at the edge of our drive. My trees produced more than a few bunches of berries the year after planting, but the berries tasted watered-down and bland! The berries that I remember from my childhood were dark in color and bursting with flavor. The berries from the trees in my yard are not quite as dark in color. My trees receive a large amount of sun and the soil that they are in is similar to, but undoubtedly not as rich as natural woodland soil.
What might I do to improve the flavor of the berries?
What might I do to improve the flavor of the berries?