The tall form of Dragon Lay is amazing .. she grows upright with a vengence. But.. I've never gotten her to produce any berries, in spite of having a partner close by. Anybody else have this experience? Is Castle Wall also shy with berries?
Could be it's a hormonal problem .. often seen with fruit trees like apples .. where vertical brances seldom bear, and horizontal branches are prolific. Orchardists take advange of this with selective pruning to increase the crop.
But with Dragon Lady, pruning to favor horizontal branches would go defeat the major strength of the variety. Is there an answer?
Dragon Lady gives me problems as well. It's not that the plant doesn't flower or set fruit - for me it's a matter of losing the fruit when the weather gets hot, or especially dry, in the summer. I try to keep it well watered in the summer, and once every few years I manage to bring it into the fall with a good berry crop, but not this year. The plant is about fifteen feet tall, and you have to look really hard to find any berries at all. Still, it is a gorgeous plant with a nice pyramidal habit, and I'll keep it!
One thing you may have to watch with Dragon Lady is that its bloom time is so early that it can get caught in a late frost. This happens a lot with the aquifolium x pernyi and cornuta x pernyi hybrids, even when you have a good male plant blooming at the right period nearby.