Is lemon thyme perennial in zone 5

So here is a question. I just bought lemon thyme from Home Depot. Bonnie Plants claims it perennial to zone 5 but online they claim zone 5, zone 4 and zone 6. It appears no one knows how cold hardy this plant is zone wise. Anyone know how cold hardy this plant is actually?

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ive got z6 blackberries to survive the winter here buried under the snow. snow cover is a great insulator.

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I don’t know about lemon thyme, but regular thyme overwinters for me. I grow it in sandy soil to keep it from staying to moist under the snow.

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we get bitter cold here, technically zone 7a but I’m reality zone 6. German thyme and regular have both previously survived (barely!) for me, lemon thyme has not. I planted more this year in a different spot- I think in a more protected little spot, where it is not getting hit by icy wind, with some extra mulch/house foundation near it, it can survive.

I would consider planting it like you would an Arp rosemary; up against something that retains heat and gives it some shelter.

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