I moved into a new house about four years ago and brought with me a quince tree, some grape vines, and a lilac bush (among other plants). Although these plants bloomed/bore fruit at my old house, the grape and quince have never bloomed/bore fruit since the move and the lilac bloomed in prior years, but nothing this year. Plants seem healthy and I haven't used any chemicals on them. They are in different parts of the yard and should be getting enough sun, water, etc. Something in common going on here? Any thoughts or suggestions?
Jeff Seattle, Washington