Dying Brunnera

Question

I have a Jack Frost Brunnera that has gone brown and collapsed. A few healthy leaves remain. Nearby Brunnera look fine. Should I dig up and replace with something else? Or will it come back next year?

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Answer 1

This appears to be a fungal infection. I can see signs of it on all of the plants in that picture.

You will need to treat with a fungicide. This article will help:

https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm

Make sure to allow the soil to dry out down to about 1 inch between watering. Any drier will be bad, as well as leaving the soil wet. You may find that the moisture needs of this plant will not be the same as the surrounding plants. They will likely stay infected, which will keep the Brunnera in a diseased state.

Here is an article that will help you to measure soil moisture:

https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm

Here is an article that will help you with the care of the plant:

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