Hello,

Lemon Thyme is a vigorous, low-growing herb that is an excellent edging or container plant, as well as a culinary treat! Zones 5b-10. Can survive winters in 4b & 5a with winter protection with a 3" pot.

This is base on what I have searched from Google.

Microclimates, like over the septic tank or next to the house, can do a zone bump. It's always an experiment with some successes and some failures. Just make sure to have very well-drained soil especially for winter in any location you try.

FataMorgana