How Do I Overwinter Lavender W/ 20- (below) Winters?

I live in Iowa in zone 5a where our winters can drop as low as 20-degrees below zero. I have never got my lavender to survive one of our winters despite getting the Phenomenal Lavender that’s suitable to hardiness zone 4. I was wondering if you had any advise for getting lavender to survive such cold temperatures? Some winters we are even hit with a polar vortex! Thanks.

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1 Comment To "How Do I Overwinter Lavender W/ 20- (below) Winters?"

#1 Comment By GKH_Susan On 04/04/2023 @ 12:49 pm

This article tells you how to cover it for protection against the winter winds.

https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/lavender-in-zone-4-gardens.htm ^[1]

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