The leaves of thymes are small, typically measuring 1/4 inch (0.6 cm) or less in diameter. Depending on the species, they can be lanceolate, linear, oblong, or ovate. Their colors vary from green, dark green, bluish-green, to grayish-silver, and some may be variegated. The texture is often smooth, and the vein pattern is generally subtle. These characteristics make the leaves easily identifiable under close observation.

The flowers of thymes are tubular and two-lipped, each with four lobes. They vary in color, ranging from white, pink, lavender, to purple depending on the species or cultivar. The flowers typically have four stamens. Blooms are small, usually about 0.2 inches (5 mm) in diameter, and are often clustered in dense whorls. The scent is pleasantly aromatic, characteristic of many aromatic plants. They commonly bloom from late spring to early summer, offering vibrant displays and attracting pollinators.

The stems of thymes are slender, pubescent, and wiry, ranging in color from green to brown. They measure about 0.04 to 0.1 inches (1-2.5 mm) in diameter. The surface is covered in fine hairs, giving them a slightly fuzzy appearance. Branching occurs frequently, creating a dense, intricate network. The stems are relatively flexible but sturdy, supporting small leaves and flowers. This combination of features aids in the plant's identification and adaptation to various environments.

The fruit of thymes takes on an intriguing form, known as a schizocarp. Characteristically ovoid in shape and flaunting a polished, smooth surface, it presents itself as a petite, yet significant feature of the plant. Each fruit measures just a few millimeters in length and houses four locules, minute compartments each cradling a delicate seed. This unique quadri-locular structure is central to the fruit's identity, providing a tactile clue to its intricate morphology. While the color of the fruit may vary, it tends to be subtly understated, blending seamlessly with the plant's overall aesthetic.