Значения термина bear pistillate на английском

Several growers have noted that their trees began to bear pistillate flowers within a few years after planting but set no nuts.

We have found that practically all Persian walnut trees, when young, will bear pistillate blossoms for several years before they bear staminate blossoms (catkins).

They are all healthy and vigorous, and several bore pistillate flowers in 1942.