I Have A Very Healthy Large Brunnera (not A J. Frost) That Does Not Bloom. It Buds But Then They Do Not Open. Any Ideas?

Question

The plant faces East and is near 2 large trees. Other brunnera on my property do just fine.

Answer 1

Are either of the trees a black walnut tree? If so, the brunnera may be intolerant of juglone. There also is such as thing as bud blast, when buds form but then die. These articles should help:

https://www.gardeningknowhow.com/plant-problems/environmental/bud-blast-in-flowers.htm

https://extension.psu.edu/landscaping-and-gardening-around-walnuts-and-other-juglone-producing-plants

https://www.gardeningknowhow.com/ornamental/flowers/brunnera/growing-brunnera-plants.htm