trigger plant

noun

1. any of several small grasslike plants of the genus Stylidium , having sensitive stamens that are erected when disturbed: family Stylidiaceae

Example Sentences

The arrival of early spring, when an increase in daylight begins to trigger plant growth, is the perfect time to put in a bit of work to help your plants thrive during the year.

From Washington Post

Oberholzer did not say when Eskom’s failure to meet emissions requirements might trigger plant closures.

From Reuters

The genes are thought to code for effector proteins that recognize the invading fungus and trigger plant defences.

From Nature