Twin Cress begins life as a prostate rosette, with its growing point remaining at ground level and leaves radiating out from this point. A distinctive characteristic of Twin Cress is that there tends to be more lobes on one side of a leaflet than the other, they are not symmetrical.
Stems shoot out as the plant matures, which can form mats across the ground if left, and leaving it often confused with Wireweed.

Twin Cress has very small, insignificant flowers, then produces characteristic double pods (hence the name Twin Cress), which are small but are very useful for confirming whether a weed is Twin Cress.