Is that moss in the soil? The soil looks very damp looking. Thyme needs free draining soil in a sunny spot. Heavy soils and excess wet will slowly kill them. I would start again, so many varieties in the garden centres.
Definitely, it won’t grow back from the dead wood so save your time and buy another one. If you keep them chopped back when the stems are still young you can keep the new one going longer, maybe. I find thyme worse than rosemary or lavender for just dying off so just replace them when they have gone over. Use gritty soil and let the surface dry out between moderate watering.
Mountainous Northern Catalunya, Spain. Hot summers, cold winters.
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The thyme has passed for the rest of it.
In which case, it’s never too late.
But in the case of “This thyme, is it too late? “ I would say yes. It is.
If you live in Derbyshire, as I do.
Thyme to buy another one.
If you live in Derbyshire, as I do.