The government's policies 'planted/sowed the seeds of' war/destruction. [=created a situation that led to war/destruction]
Her comment 'planted/sowed a seed of' doubt in his mind. [=caused him to begin to have doubts]
She grows her plants 'from seed'. [=by planting seeds rather than by some other method]
(..) Let's do another. She's got something in her throat. When a body comes out of the water, lots of times there's leaves in the mouth. What is that? Some kind of seed pod? No, sir. That's a bug cocoon. There's no way that could get way down in there. Not unless somebody shoved it in there. (..)1991 The Silence of the Lambs