Therophytes are annual plants that die after they reproduce. This type of plant survive unfavourable seasons (winter, drought) in the form of seeds which germinate once conditions return to being favourable.
These herbaceous plants therefore have a short lifespan and grow quickly.
The Canadian horseweed (Conyza canadensis) is a therophyte plant. Originally from America, it is considered an invasive species in Europe. © Eco Heathen CC by-nc-nd 2.0