German thyme, winter thyme
Thymus vulgaris

Hardiness: Zones 5 to 9
Plant type: Herbaceous perennial
Height: 6"- 1'
Spread: 6"- 1'
Sun: Full sun 
Water: Dry to medium
Bloom time: May to July
Bloom color: Pale purple
Soil: Well draining, average, sandy to loamy soils.

Notes: hardier than English or French thyme

More information on this plant here.