Q.Brunnera (Jack Frost)
Should Brunnera (Jack Frost) be cut back in fall? Should I cut it back before frost?
Downtoearthdigs
Answered on October 18, 2016
You can trim away any ragged parts of the plant in fall.
Winter mulch is recommended. Cutting the plant back in the spring is better as leaving the leaves on to protect the crown through winter will give better results.
https://www.gardeningknowhow.com/ornamental/flowers/brunnera/growing-brunnera-plants.htm
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